I hope that's the case. I would like to see all contact, even passive contact, stop entirely. My thought is that anything like that will keep emotions stirred up. Do I see signs that her feelings about OM aren't as intense? Yes. I just think that if she would make the break entirely that her feelings would dissipate that much more rapidly. She wants to detach from him and reconnect to me, but wants to do it "her way". Any suggestion I make that she take him off FB etc is interpreted as a demand, though even I don't see that as a nonnegotiable.
Save it for your next MC session and ask for assistance on how you two can navigate this together.