Ack. I see what you're dealing with. Multi-layered and complicated. You understand the layers and complications and just want to maneuver through them and get on with your life. It must give you an even higher sense of frustration to be on this end of it when you understand so well the legal end of it.
Keep up the good fight (even though I know it's so tiring right now). I hope this gets resolved soon so that you can enjoy your job and concentrate on it and your health. The stress of it cannot be helpful.