If you'd like a tour of the ACC here in Vancouver (well, it's actually in Surrey), I'd be glad to give you a tour. Send me a PM if you're interested.
Vancouver is one of the better ACCs in Canada - trainees here are treated well and any horror stories that you hear about trainees that aren't allowed to use certain restrooms or other facilities are from other ACCs. We have quite a few foreign controllers here and do NOT feel that that they're taking jobs away from Canadians.
As others have said, the foreign controller program is dead, however, you could get hired through the regular recruitment channels. I would guess that the recruiters would find you quite suitable based on your previous experience. Of course you'd have to have Canadian residency etc... Training is very expensive for Nav Canada so they try to pick the people with the most promising chance of success. I would guess that previous control experience would help you in the selection process.