Before I comment, I'd say that Carragher has always had a grey side that isn't likeable at all. Petulant, gobby (no pun intended), bit disrespectful (even in studio towards Redknapp), and of course doesn't put his neck on the line with all his talk.
As for the incident, it's inexcusable. Never, ever should he have reacted like that. Thought he would get away from it and should rightly be on garden leave or something.