Wow! That's so long .. what happens if it takes so long that you fall out of RO while waiting for the PRTD so you can come back and maintain your RO? That seems pretty serious for it to take so long.
Normally the card is expected after 6 months or so, and certainly within a year. Is there any chance that you got the PR card mailed to you - anyone who can check? Because if the PR card can be retrieved then your best chance might be to have it sent to you and then fly back on that.
Plan B - any chance of applying for a US tourist visa where you are at? If you can fly into the US then you'd probably be able to make it back home via the land border into Canada.