I have experienced a similar lack of lane discipline, eastbound turning onto the Prince Edward (Bloor) viaduct, cars always seem to cut the corner there - it really grinds my gears!
Almost had a run-in with a GMC Acadia.. and a garden chainlink fence. I was following the guy, dead centre but a few metres back - on a single-lane one way street, I was in no hurry and was just going to roll by him as he stopped at the inevitable stop signs ahead. However, he stomped on his brakes, so I skipped around hard to slow, looked right and decided I'd go left due to the parked cars on the right. I went left.. then noticed as I was alongside him he popped on the old left-turn signal and started to move... into me. I ducked onto the sidewalk and almost into this guys fence (he kept going almost into the driveway and was onto the sidewalk already when he stopped) - I carried on and I was pissed I didn't get a turn signal, causing me to look like a prick. I kinda feel guilty, but I think it's his fault. Gah!
Happened on Silverthorn south of Rogers Rd (having just downed the hill across the lights in time, yay!)
Nice escape, kergin. Sounds like a crap ordeal elTwitcho.