I have very, very similar symptoms. I don't have precise answers, but I do know that when I do my neck stretches, rib adjustment, jaw stretches and take my diazepam, the ear pain is greatly reduced or entirely absent.

My impression has become that I have chronic muscle tension and that this is the cause of the TMJD, ear problems and dizziness, not the other way around. Why the muscle tension persists is a mystery to me.

Sorry I couldn't help more. I'd like to know more myself!