Seems to me Mangini was the defensive coordinator of the Pats. Hmmmm, how did he know what they were doing unless he was part of it.
So lets see. He was part of the system. He reaped the benefits by getting the Jets job. Then he ratted out the guy who gave him a chance.
Sounds like a RAT.
He essentially did exactly what Jose Canseco did.
Then again if you cheat don't get caught.
Everyone does it.
I could care less in the end.