Hey Columbia accepts lots of Canadians. I'm not Canadian but I'm also international and I also turned my apps in about a day after the line. I called to check if that was cool and they said it wouldn't be a problem. Anyhow I got an interview for Dec 13 which I prostponed to Jan 9 before finally cancelling the damn thing.
Write to Dean Frantz. I heard and think he's an awesome guy. He is the main guy that runs their admissions, and I actually think he must devote ALL his time to the process; cause I got a personal invite letter from him and I've read about several people on this board that also got personal status updates or "you're wellcome" notes from the guy.
Definitely give it a shot.