I'm responding to you because I started experiencing odd feelings in my jaw about 3 weeks ago that were foreshadowed by a dream involving my jaw. I think the jaw does have to do with decisiveness, and thus maybe decision making.
I just have 2 suggestions; 1) ginger is a good supplement for inflammation, or you can look for other natural anti-inflammatories.
2)There is a book by Carlos Castaneda entitled "Magical Passes" - it has some yoga type exercises for strengthening an energetic center in the body called "the Center for Decisions".
I'd like to hear from you if you find something to resolve your problem.