Continue to live your life. If going dim helps you, then do it. Like Mila said, have no expectations.
Do with just you in mind. If your XH's BMF could truly influence the Rs your XH has with you or anyone else, would you really want him back right now? Your R would always be at risk with the BMF around.
GAG, detach and stand back as a silent observer. It sounds like your XH needs to figure out what the BMF's motives are on his own.
If your XH ever makes another comment about an upside down pic that you took. tell him to turn his phone upside down and the pic will be right side up. How about this 180? Go visit your former MIL, take her pic for yourself and keep it. Don't even bother telling your XH you visited. Make him wonder and ask YOU about it.
