Seems like your OEO (hee!) is trying to 'cut you off' like you are doing to him. But he is going to try to use his family instead. It won't work, and he'll see it. Funny I told xH's sister that he would be bringing them to Christmas eve dinner and she said "Any chance he is working and you can bring the kids?"
I am so glad you had a nice holiday.
Oh and your brother is soooo right, he might be sleeping at OW's, but he isn't living with her, no way, no how. OW will soon figure this out and kick him out too. SOOO nice to not be a part of that drama, huh?