Yes, and that's why Mikey Scars is actually a very tragic figure. He was brutally honest in that interview when he says that his conscience is bothering him because he has hurt so many guys on the street that he respected and even loved. He sleeps 3 hours at night max. because he can't look himself in the mirror basically, he feels such a failure in that he was a third generation wiseguy and becoming a rat really fucks with his sense of honor, dignity and self-worth.. I
I bet he has regretted his cooperation many of times.. His whole identity was shattered and that's pretty traumatic for anyone..