I have done the same thing, regarding being pretty open about my medical issues, and I have been met with similar results. Unfortunately for you, your leadership has a job to do, and it's being complicated by your situation. Blaming them for going by the book is not going to do much except add...
I can't offer any personal advice unfortunately, but I believe your next step should be contacting the Air Force Wounded Warrior (AFW2) Program for some guidance. I just started my MEB and the Resource Care Coordinator (RCC) from the AFW2 has been the most helpful with some tough questions...