Hi uncdl, I read this before and wasn't going to post because I don't really have many answers for you but I saw that no one has posted back to you so far so I didn't want you to feel like no one was interested. I know that I had a slight open bite - my two front teeth just barely overlapped my lowers and the laterals and canines didn't at all (you could see right through to the inside of my mouth) and some of my side/back teeth didn't touch. My ortho used an archwire with loops in it to move my front teeth down to overlap the lowers a bit, and then he used elastics to make my side/back teeth touch when I bite.
I know it seems bad now, but this could just be one of those "it gets worse before it gets better" type things. Maybe he needs your front teeth to move like that to get some of your other teeth in line and then he will bring them back down to have a normal bite. I know your dentist said you shouldn't have developed this open bite, but really, he doesn't know what your orthos plan is so he really doesn't KNOW that this wasn't part of the plan all along. And I think with your estimate, there is still plenty of time left to get this issue taken care of. Mine only took about 2 months to fix.
I don't know the answers to the questions you had about getting out of a contract and if you still have to pay if you don't like what your ortho has done, but I think most of us have been at a point in treatment where we thought "what the heck is going on with my teeth, this CANT be right"! I know I definitely was but things are fine now.
Don't stress too much unitl you get to ask your ortho about it. I know it's hard waiting it out til your next adjustment but I think the chances are good that he knows what he's doing and plans on correcting this issue. Good luck
