He is getting stronger each day, so if he is doing well tomorrow - they will be able to do other tests to see if they can get to the root of the issue.
I have seen the Addy dogs website - even joined the facebook and yahoo groups they offer, trying to learn as much as I can. Very horrible disease but it can be managed, and we love our dog. He is just the cutest and smartest basset hound I've ever met.