Actually, I did heard about it.. but I didn't pay much attention to it..
All I know is that the people in Toronto are very ungreatful towards Vince, after leading the team to some really good seasons and even to the playoffs.
He had a problem with the coach back than and the team was going nowhere, so he wanted out like many players before him in Toronto and in other teams, the team didn't want to release him and the coach didn't give Vince many minutes (30.4 mpg & 15.9 ppg in 04-05 and 38.2 mmg & 22.5 in 03-04 - he played about the same).
If Vince really did it, it surely because someone in the manegment made his life a living hell.. I'm sure many people would have done the same in this situation.