Babe, Do you have a thread here in the MLC Forum? If not, please start one. It's easier for others to follow your situation if you have your own thread. That way we can answer your questions and you can go back and refer to them often.
To answer your questions yes, sit quietly and leave him alone to figure things out. You can't help him.
OW withdrawal is when the OW is no longer in the picture. They exhibit many signs just as a drug addict, gambler, sex addict, alcoholic exhibit when they don't get their fix.
You will have more responses and different views if you start your own thread here in the MLC Forum.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.