I think the argument about if one (under the process of in-land application) is allowed to leave and re-enter the Canada boarder would be an ongoing one. To me, this is the worst of all about the In-land PR process. Yes, it is not recommanded to leave the country while your "IN-LAND" application is in process, but the heck they are making this "process" years long for? So that means we ought to stay in Canada for n years? who knows how long the first stage is even now? it is growing exponentially. Some of us have families back home. Visiting grandparents is a good "excuse" to leave the country temp for the boarder agent?
Anyway, to me, there is no reason to deny someone from re-entry if:
He/she already filed for inland application which cost 1000 bucks,
Already received AOR, or any other proof,
Has TRV if required,
Has OWP, or study permit, post-graduate work permit or whatever,
The boarder agent needs to be reminded of what disgrace it is that CIC is current having such big backlog on inland application, whatever the reason is. Their mood that day just doesn't determine all the years of waiting the people of in-land application have to go through. If it wasn't for the pilot program, it is definitely a case against human right.
I think at the end of the day, we have to look at it case by case. Personally, i just don't believe someone would just be denied for re-entry for no good reason. So it is not good to spread that kind of news here if the story behind it is not fully understood.