In the end it comes down to just one thing.
You can't run from the wind.
You face the music, you trim your sails, and keep going.
Hopefully with his cooperation he will get a lighter sentence than most, he was an accomplice, he knew just like everybody else what was going on back in those days.
I'll just leave this here with you.
He took an oath, lets wait and see if he honors it. So far he's on the up and up, doesn't mean that can change.