When you say that FIB has anger issues, where do you draw that conclusion?
From what I read, Frank posts about the anger his wife does as more of a chronicle in the study of what anger can lead to. As for himself, he is a shining example of taking the high road.
I think that your type of advice to him now only causes for him to have some uncertainty and doubts in his path he has chosen to follow.
It is great that your marriage has been reconciled, but surely you must realize that not every marriage should be reconciled.