He claims his captain falsely accused him of being a rat and that guys were following him around, planning to take him out. So he walked into the FBI NY office and flipped.

That, as well as a “supernatural intervention;”

Mobster John Pennisi said spirit of his grandparents told him to turn rat
https://nypost.com/2021/06/04/mobst...s-grandparents-told-him-to-turn-rat/amp/