There's obviously history between Adebayor and the Arse fans - when he first got there he couldn't hit a barn door from two yards out with his shots on goal. He copped a lot of stick. He hasn't the helped the situation with some of his comments when he become hot property a few seasons later.
Apparently some of the chants at the game from the Arse fans referred to his family, and in particular his father. Fair enough, he's a pro sportsman and should be able to put up with it, but the banana thing is going OTT.
He should get a big ban for the stamps, but not the celebration if you ask me.