Taking him home wouldn't have changed how bad his wobble is. I know that someone who doesn't have much experience with a severe wobble would be sad, but I'm sure he eats, drinks, sleeps and poops just fine.
I just have to ask, how does a snake "look" when they are in pain? I have seen a few snakes where they had injuries that would be extremely painful, but they didn't "look" any different ( to me ) then another ball. I'm not trying to be a smart@$$, I'm simply curious.