x2 Leave him alone for a week, then your first priority should be to get him feeding regularly. Keep handling to a minimum until he has eaten for you. Then like Lgray said, take him out for very short handling sessions on the days that he is not digesting food. Baby ball python bites I have heard are just nips so nothing to be too scared about. It's best to "tame" him when he is younger rather than let his attitude develop even more as he gets older.
Here is a video on how to handle aggressive hatchlings from one of the top breeders in the US:
http://www.youtube.com/watch?v=S7DQssbM0uk
If you want to know more about ball pythons, the care sheet on this website is extremely helpful. Most of Jkobylka's videos are very helpful as well, and if not, they are just darn entertainingBest of luck !