Its good that you have the beginnings of the peaceful feelings that can be yours.
When I was in the midst of the mess of divorce and selling the house, I kept all contact to a minimum and insisted it deal only with the issues at hand. I cut off conversations that did not fall under the category of business. I actually kept it to emails only after the initial face to face discussion on selling the house. Our real estate agent was the one to relay the necessary information.
Set your boundaries and keep to them. He will come to respect them (mostly) if you are firm in your response. Tell him how you want things to go. Write up lists of what you want from the house, what you propose he gets. Set time limits for responses or actions. You can get thru all this.