Sounds like it was just stress. Double check temps and care sheets and all that, I know we're having a hot summer so your hoggie might be a little hot if you don't have AC (I don't either). Of course the move is very stressful too so that might very well be it.

As stated, wait before the next feeding and feed small.

Snakes don't have as well a designed vomit reflex as people. They vomit up just about all their stomach acid, and it takes them quite a while to produce working-levels of stomach acid again.. thus waiting before the next feed.