What if both parties aren't willing to do something about it?
It's like rowing a boat together, all you can do is go in circles if you are rowing by yourself.
So a recent huge argument that massively setback our R was over NC. He had blocked contact with AP some time ago, but in the "Messenger App" linked to Facebook, when you block someone they are not blocked on actual Facebook. So whilst he was not connected with her directly, they had about 200 mutual friends, and thus she was still able to subtly contact him indirectly through use of mutual friends.
For example, she would post love song lyrics or obviously affair nostalgic photos targeted at WH and then tag in a "mutual friend" nonsensically so she could be sure he saw it in his newsfeed. She was doing this for weeks, with photos and all sorts of triggering things for me.
I asked him to block her on Facebook entirely so this could no longer happen and this should have been a simple and straight forward request that he met.
Correct, blocking all social media is a basic part of NC.
However, after a year of stalking and drama that finally just ended, my WH was scared doing this would alert her that he had blocked her and cause her to act out some "revenge" and he maintained that she was generally leaving us alone and it was safest for everyone to leave it alone instead of poking the crazy bear.
He should have blocked her a long time ago. He is protecting the A.
She has made extensive threats to ruin him with personal information / false allegations and so on and I think he is genuinely frightened and has shown massive anxiety over this but he could not see that leaving me in a position to feel permanently triggered was also not an option.
Have you seen these threats? Are they well documented? Remember, your husband is also a proven liar. If you have evidence that she has threatened false allegations you could easily take legal action against her for that alone.
This is part of why exposure after discovers is so important. It makes the WS face the consequences of their actions, while also relieving the potential for blackmail.
So he ignored my request despite it being given 6 or 7 times over a month, until I packed a suitcase and left. 4 hours later, he decided a compromise to resolve it would be for him to delete all social media entirely.
And why wouldn't this trigger all of crazy lady's threats? I don't really understand how this compromise is better than blocking her. FWIW you don't get a "you've been blocked" message when someone blocks you.
I feel okay about that solution in that it solves the problem, but also disappointed that (a) we could not resolve this conflict before it got to suitcases being packed and (b) it now means I can't interact with my own husband on social media because this crazy AP calls the shots still.
Maybe it does, and maybe it doesn't. Considering your H has shown the propensity for having an A, and social media generally feeds ego kibbles "needs", it might actually put him in a more vulnerable position from an external stresses standpoint. I'm not trying to feed the "unmet needs fallacy" or blameshift here. He should be able to be faithful regardless of those environmental stresses and turn to you if he is feeling down or that something is lacking in his life.
I know my own behavior is all I can change, but looking back on this I am not sure what I could have done differently? Conflicts escalating like this really sets me back a long way in my recovery :(
Make your intention to walk on dealbreakers more clear from the outset. If necessary, make a needs list. This is the way unmet needs should be handled. Say, "You blocking and never interacting with OW is a need. It is not negotiable and if you can't meet it, I will walk. If the honest answer is that you are unwilling or unable to meet my needs we shouldn't be dragging things out."
In the future, if you do have a needs list, you can just point to it and say, "That's on the needs list and I'm not negotiating."