Here's a few leads:
There's Philip Starkman at Spring Rain Sangha convenienlty located in downtown Toronto:
http://springrainsangha.com/teachers/There's Norman Feldman and Molly Swan. He's in Guelph, but teaches in Toronto from time to time:
http://www.insightmeditationretreats.ca/contact.phpAnd there are the teachers at Tisrana who make it to the Big Smoke on occasion:
http://www.tisarana.ca/index.phpGood luck!