Well it was a punk play. Game is essentially over at that point and Rondo let his frustration with the loss spill over into a stupid punkish foul. Frankly he is lucky they didn't tag him with a flagrant 2, eject him and suspend him a game. Rondo needs to grow up and not let his emotions control him.
Also to be clear, I agree with pretty much everyone that thinks it is funny coming from Wade given his antics every season, but it still doesn't change the fact that it was a punk play by Rondo and quite stupid really.
Also, why did people ever like Wade? I'm confused by that. He has been a prick pretty much since he arrived in the league. He has always been dirty and has always set the tone for that team (at least until the end of last year when he finally realized that Lebron was better than he was and the team should get behind Lebron). I mean I get why people don't like Lebron, but Lebron has always been a consummate professional on the court. He plays the game the way it should be played. So does Bosh, but not Wade he is as dirty as they come and right there with our very own Kevin Garnett in that regard.