Not a chance, he didnt have enough time before his death, plus he wouldnt of been able to strike a very good deal, as his crew was thought by police to be the most dangerous ever investigated...and he was the leader.

Only way he would of flipped would of been after a trial.. and he got death penalty..he wasnt that much of a stand up gangster i mean they say he would only shoot you in the back of the head, he didnt like to look at people in the eyes when he killed them. That alone makes me feel he would of tryed to roll on castellano before get the chair.