No big advice but keep in mind that you don't have to agree to everything or anything during your talk. You are fully entitled to say "I'll have to think about that" or "I'll have to get back to you on that ." If he presses you for an answer or starts spewing again (his control shenanigans with you talking to an L and canceling the mediation were just that) you can just tell him that you're not trying to confound him, you just want to make sure you get to a fair and appropriate settlement. When you talked to your L, did you get a sense of what would be fair for you to get?
I had another thought but lost it because it takes forever to type on my phone.... If I think of it I'll come back.
