When it comes to serious disputes between members, it's always best to clear it with "the Boss" first, and get his input.
Okay I agree with that but if they can't do anything you need to warn the others in this forum. Dishonesty hits a nerve with me.
The betrayal of trust that we put in others because of their being members is one of the worst there is, and warning other members of it happening is also a right thing to do. But done as a reaction could draw responses that get out of hand and backfire on the OP's continued membership. A name and shame thread is sometimes used, but any posts need to be vetted and possibly vetoed before inclusion.