jamaisjedors I have been following your thread and may have commented under a different name (forgotten password!).
Your posts have really, really resonated with me. What you call 'dithering' etc was me. In August 2016 I told my ex H I wanted a divorce - he'd hit me again. He was similar to yours - would sulk for no reason, would change moods and quite frankly I believe he knew exactly what he was doing and putting me through. He was also violent, not often but enough.
Ex H said he would do anything to save our marriage (except listen to me when I would tell him I was scared of him!). So we went to counselling together, and had separate sessions too. I remember he was desperate for Relate to help us, whereas for me it was a sign I should leave - I was disappointed they would fit us in. In all honesty, I KNEW I wanted to leave, I just didn't know how to follow through because he was being nice.
We went to counselling for nearly a year, what I wanted in that time was for my counsellor to give me permission to leave. I remember once telling ex H that if I stayed it would be to make him happy and he seemed happy about that!
I know what it's like wanting someone else to give you permission, to wonder if you are making the right decision. For me it was a realisation that the only permission needed was my own. If I wanted to go, I could - I did have boundaries, I just forgot what they were. I didn't HAVE to make him happy. I had come full circle (my dad disowned me because I wanted to marry ex H and fully expected me to agree to put my dad's happiness before my own...now ex H expected me to put his happiness before mine).
When I told my counsellor my decision, I remember him saying he agreed to the counselling because he felt it would assist me in coming to terms with my decision. I was suicidal, because I didn't want to break up the marriage but I couldn't stay with him any longer (over the course of the relationship he had punched my arm, hit me, had his hands around my neck and then there was the emotional abuse which was more prevalent, the violence was always a few months apart). Ex H knew I was suicidal and he managed to make that about him too. He once said in counselling that he was suicidal, I rushed to him and begged him not to do anything. Didn't think anything of it until counsellor told me how pleased ex H looked with my reaction.
My ex H did use what I said in counselling against me, nothing major but the digs etc. He never really listened to what I said or what I was feeling. And I'll be honest, right up until he moved out (summer last year) he was still being intimidating and abusive. A PP (I think Towel) hit the nail on the head in your last thread with the Narcissist's Prayer. It didn't happen, or if it did it wasn't that bad etc. That whole prayer summed up my ex! He threw something at me in the last few days and I stood up to him, but a week later I was hearing "It wasn't that bad, it wasn't that hot...oh well"
What I'm trying to say (clumsily, might I add!) is, do what you need to do to be comfortable with your decision. I was 'lucky' in that we didn't have children so I never have to have anything to do with him again. I know he will always blame me as it is easier than facing who he is. What I am proud of is the fact that I made my decision, when I was good and ready.
I've taken so long to write this your thread has possibly moved on somewhat! As you have said before - your boundaries are yours, if he has crossed them then you do what you need to for you.
You are a brave woman