Hi
We are 7 months past BD, 6 months since we separated. My xp doesn't monster often but I think when he does it is around the time he has moments of clarity about what he has done. Xp turns into a teenager (he displays a lot of different teenage behavior, differently having to go through an unfinished part of his past) and starts emailing and texting me all sorts of crazy stuff. Like its my fault no body likes him or any of his friends. Apparently I have super powers!
I think the monstering is actually the guilt and the bad feelings he gets when he has that clarity of how much distraction he has caused. Once he has monstered he then goes back into the tunnel so again he forget about all the nasty lies and rewriting of history that he did while he was monstering.
Kia kaha - stay strong
Wow,....this is weird, my husband did the same exact thing right around that time. We met about financials around 8 months post BD, before (and after) we very rarely talked about anything except financials. Out of the blue he said, "you must hate me", I said no i could never hate him in fact I forgave him, Then it got really weird,
he said he was "testing" his friends to see who would side with me and who would side with him. I said that I wasn't aware of a contest. He said nobody called him and everybody was against him. I told him that very few called me too it was me that called them, I said people are just confused about the situation b/c we were always the "stable" couple that everyone could count on. He thought I was rallying everyone against him and it wasn't further from the truth.
He then leaned in and said, "you know I have issues in social situations and have trouble with people"
Here's the kicker...this man plays hockey, is in a band, is a leader in his industry, he has more friends than anybody I know, when his father died there were literally hundreds of people lined up, mostly friends of husband. I even said the phrase you used, "wow, I must have super powers to make everyone hate you", many people did try to talk to him after he left, some of these people I don't even know, yet he still tried to blame me for people questioning his decisions.
Again, I think they are just projecting their own guilt and inadequacies onto us.