Snakes that eat very large meals for their size generally get somewhat uncomfortable in the days after the meal, but I've found that ball pythons are more likely to keep it down and just tought it out than boas, who generally will regurge withing 24 hours of a huge meal.

Chances are that he was just feeling bloated. A snake that eats a large meal will often have what feels like a gas bubble in their belly scales around where the lump of their meal is. This is nothing to worry about, as they will generally pass it with a nice chalky squirt in a few days! Just make sure not to handle the snake, as well as provide plenty of fresh water as well as keeping the temps up where they should be, and everything will be alright!