I would be very suspicious of any doctor saying autism/autism spectrum is reversible or curable. Minimizable, possibly, and you might even want to do that. It's hard for me to say, because I'm rather virulently opposed to anyone trying to say *I* should be cured. But, I do know I am higher functioning than most others with autism, and sometimes even doubt that Ausperger's should be on the spectrum at all.
However, especially in light of Semiotic's comment, I very much think you should return to Washington. You need a job to afford the care, no? And their will be help in Washington. Just be easy on him during the move, let him have space to hide and unwind. (but probably not a fish-cave. >.> *bad joke*)