When you are posting in the MLC Forum, please stick to one thread. All of your questions can go into that particular thread. For example, you currently have two threads on this forum and I noticed that people are posting to the other one. It's easier for everyone if you stick to the original thread that has your life's story on it. It helps us when we need to go back and refer to it for reference.
I can't answer for Jack, but your h hasn't gone through OP withdrawal, at least that's what I'm reading from your postings on your other thread....if he's still in contact w/her, that's not withdrawal. That's still getting a fix just by her responding to him. Until he has completely cut all contact, withdrawal symptoms will not appear. They will be pretty much like depression, some anger, etc. He can very well be moody and acting like a little brat. The other person is a "high" for them and when they come down off that high, they can very well act out like someone withdrawing from booze/drugs (without the shakes). Generally, it's not a pretty sight.
You need to understand first what MLC is all about, how the stages play out and that depression drives his crisis. Focusing on withdrawal is just a bit too soon. Your h has a ways to go and that's why it's important that you keep the focus on you and allow God to work on him.
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.