Yeah I know you shouldn't.
But if there was ever one that deserved it, or that was more agitating, I can't think of one.
Besides, it wasn't a beatdown, it was a one shot deal-- she was fine afterward and was out making a jackass of herself the very next day. No harm, no foul.
But your right though, being known as the dude who ko'd the leader of the meatball mafia live on MTV is probably something that will follow him around forever.