(((JMF)))
I've been in the middle a few times myself. I had to put my foot down and warn them that I would no longer be held hostage in their battles.
What I learned about this was that it bothered me much more than them that there was a problem. I was the one stressing and trying to find a solution, while they sat back and played "their game".
I wanted no parts of it anymore. That doesn't mean I wanted no part of them, just "it".
I agree with everyone above...step back, remove yourself from the equation and keep the leftovers
