Did anyone see the replays of the Yankees-Blue Jays brawl last night? How about the Toronto catcher being dragged out by his chest protector strap?

as a mild-mannered guy.

playoff run. With the injuries he's had recently, I would think he would try and avoid situations life this to stay healthy.

I know they threw at him, but something must have been said to set him off like that.

They threw at him because two of their guys had been hit previously. Maybe something was said during the exchange right after that.

enough to know the routine.  The Yankees hit two Jays, so the Jays retaliated by throwing at Posada.  But they threw behind him, so I think he must have known that no damage was intended.  But something must have been said, because the brawl erupted AFTER all this went down.  Oh well, it's in the past now.

who has demonstrated this type of behavior before.
He totally put his own arrogance and vengeance before the team last night.

It is widely understood that pitchers stand up for their teams the old fashioned way.  BUT, there is also an unwritten rule, NEVER throw towards the head of a player or behind them.