It is unfortunate that the OP's query has been diverted by an ongoing debate, which has been rehashed repeatedly elsewhere, which is of little relevance to the OP's situation and a distraction. (I will, nonetheless, offer this sidebar: assertions that CBSA does not routinely enforce the PR Residency Obligation for returning PRs clearly in breach of the RO is akin to saying that because many drunk drivers make it home, and are not arrested and prosecuted, law enforcement typically does not bring charges against a driver who appears to be impaired . . . big difference, though, is that these days the POE amounts to there being the equivalent of a roadside check on most roads most nights . . . big clue: if a law enforcement officer has contact with an impaired driver, the odds are very high there will be an arrest and prosecution, no matter how many times drunk drivers get away with it.)
My impression is that your situation is not all that complicated, not particularly difficult, and your best course of action is to simply stay, go to work in Canada, and after you have been here for more than 730 days within the preceding five years, apply for a new PR card.
That impression is, of course, contingent on CIC not pursuing removal proceedings. We can speculate for days and weeks about whether or not CIC will investigate and pursue formal proceedings to determine if you are inadmissible, due to a breach of the PR Residency Obligation. No one here can definitively say you will or you will not be subjected to such a process.
My impression is that the odds lean in your favour at this point, against CIC pursuing removal proceedings, and moreover that even if CIC does investigate and conduct a residency examination, you have good odds of avoiding loss of PR status on the basis of H&C grounds. Not because CIC is lax about enforcing the PR Residency Obligation (there are strong indicators to the contrary), but because your circumstances appear to fit into the scope of discretion for, essentially, waiving the breach.
In other words, there really is a fairly clear choice, if you want to preserve your Canadian PR status, stay, work, live a normal life in Canada, and when you clearly are in compliance with the PR Residency Obligation, apply for a PR card.
If the POE officers sent a referral or letter to the local office, you may get correspondence from CIC (at the address you gave) and may be subjected to a Residency Examination, but that is no reason to panic. Best to obtain professional assistance then but that is not absolutely necessary. Put together your best account of what you did, why, and put together all the information you can regarding what ties you have to continuing residence in Canada. Again, it is my impression the odds are in your favour on this. No guarantees, but this has better odds of success than re-applying for a PR visa.
In the meantime:
In the meantime, you are still a Permanent Resident. You are alive, not a Canadian citizen, there is no enforceable Removal Order, and you have not surrendered your PR status, therefore you are still a PR -- once a PR always a PR until death, becoming a Canadian citizen, adjudicated loss of PR status, or PR status is voluntarily and
formally (in writing) surrendered.
As a PR you have status to legally work in Canada. And, you have a VIN, thus there should be no impediments to working in Canada. (Employers may require you to present your VIN card; copy can be obtained if you have lost this.)
I do not know how difficult it might be to obtain OHIP coverage. My understanding is that if it is a first time application, a valid PR card is ordinarily required. If you had OHIP previously, and are applying to reinstate insurance based on re-establishing residence, perhaps you will only need to prove identity and residence (not status), I do not know. In any event, obviously the extent to which this is a problem is dependent on personal circumstances. (I went for years without health insurance, essentially self-insured, and even had surgery during that time which I had to pay out-of-pocket, including a substantial deposit upfront . . . but of course going uninsured is a risk, and for some not practically feasible.)
I am not sure, either, about how difficult it might be to obtain an Ontario drivers' license. The CoPR may be sufficient to show status for purposes of a drivers' license (my impression is that OHIP is tougher in this respect).
Additionally the CoPR and cancelled visa in the passport used at the time of landing may be sufficient proof of status in some circumstances.
Overall:
Overall, again, the main thing is that unless CIC investigates and issues a Removal Order, your PR status is intact, you can stay and work. Even if CIC investigates and you are subject to a Residency Examination, it appears you have a good case for CIC to favourably exercise its discretion based on H&C grounds.
Note regarding H&C grounds:
There is often some confusion about what is relevant to H&C determinations. For example, in the context of PRs who have failed to meet the obligation to be in Canada for 730 days within five years, some participants in this forum assert that being abroad to attend school is
not considered in the H&C assessment. This is patently
not accurate relative to a determination that may lead to a loss of PR status.
What constitutes "H&C grounds" in other contexts is, in many respects, similar or even the same in the context of determining whether a PR's breach of the Residency Obligation should result in the loss of PR status, and thus factors related to unusual and undeserved hardship, or disproportionate hardship, loom large.
BUT in the specific context of determining loss of PR status, the H&C assessment is substantially broader.
In particular, while there are formal
guidelines prescribing specific factors which
MUST be considered in evaluating H&C grounds (most of which are similar to consideration of H&C factors in other contexts), overall the guidelines for determinations as to loss of PR status also provides the following:
The range of factors to be considered should not be restricted by these guidelines. Officers are obliged to consider all the information presented by a permanent resident.
H&C factors must be reviewed on a case-by-case basis. Permanent residents are free to make submissions on any aspect of their personal circumstances that they feel would warrant retention of their permanent resident status.
For a thorough outline of what is considered in evaluating H&C grounds in a determination which may result in loss of PR status, see
ENF 23 Loss of Permanent Resident Status, section 7.7 beginning on page 19 in particular. Note, CIC is migrating to a different format for sharing information of this sort, and sometime in the near future the operational manuals will not be available (many are already gone, such as most of those regarding citizenship). While these manuals will no longer be valid, technically they have not been formally binding all along and thus have been just guidelines; they will continue to be a valuable resource illuminating internal practices and policies at CIC, subject to changes of course. Thus, nonetheless, to the extent they are consistent with the formal statutory provisions and adopted regulations, they will continue to illuminate important aspects of internal CIC processing practices. Thus, it may be worth saving a copy of this particular pdf for future reference (the availability of this manual online may disappear any day).