Butch - Why are we acting like, or Fish was, that something had been 'done' to him? Butch is a very loyal but opportunistic character on the show. He was with Fish, then Falcone who appoints him to Penguin and through all this he is shown as a very competent, in control person. Suddenly in this episode he's portrayed as a bit unstable and somewhat manic--that came from nowhere at all.
That one was hinted at before, he was only really loyal to Fish, Maroni brainwashed him somehow before he appointed him to the Penguin.