I couldn't figure out why Tony S stuck his neck so far out with Johnny Sacks. He personally vouched for Tony B, when he could have just denied any knowledge. I don't know what his angle there is, but he's always got one.
At some point this season, I'm pretty confident that Tony B is going to turn into a psycho killing machine (ala Pesci in Goodfellas). His persona is a little too tightly wrapped. Buscemi is an absolutely GREAT actor, and you can see that he's just itching to go nuts with the role. They didn't add him to the cast just to be fidgity and insecure.