More journalling - Well I was in IC today and put my H on speakerphone so I'd have support if the conversation went sour. H did not know I was in IC office.
Long story short, I asked if this was a good time to discuss the plan for tonight and H said "what plan?" and "What are your ideas?" I was aghast that he hadn't put any thought into who would stay at the house tonight when he has made it clear he is not pleased with the current arrangement. So I calmly said what would work for me is that I come home after my support group and go to bed. H can either have the rest of the house for himself, like last night, or go to his place. He asked if I needed him to get up with S in the morning and I said no. Then he asked if I could pick up S after preschool today - work meeting would go a little late (H was originally going to pick up S to take him flying). He said what time he would pick up S and we agreed and got off the phone.
No arguing. Plan set.
Big success. We had a successful disscusion without negative emotions and I feel better knowing what the plan is for tonight.