I actually think the MC feels that her hands are tied as well. She recognizes the situation for exactly what it is, but doesn't seem to have any strategy for dealing with it other than to support my 180 and GAL.

Tomorrow at MC session we will need to address my rejection of OM. I am sure that I will need MC to heavily moderate the session, because I am just dying to explain just why and how OM is behaving as an enemy to the marriage and why therefore I have no reason to be cordial to him. I need instead to say as little as possible while moving toward the goal of not having the OM anywhere near me. And I'm not sure how to do that.