Ball Python Traumatic Experience

[SfGamer]

So I am a teacher and acquired my 7 year old ball python from another teacher on campus about three months ago. I was told he was a biter. Well after learning more about him, I found out that he was biting because he was only being fed one small mouse every other week! I started feeding him three medium mice a week...two on Thursday and one on Friday. Well one Thursday I did not feed him and fed him on Friday. Right before I was going to feed him, he bit and latched on to one of my students. (This was after school.) I tried getting him off like I was told by the reptile store, which was to squeeze his jaw and pull out and up. He was pretty stuck and began to constrict around the students arm, so I unraveled him. After several minutes I was able to get him off by squeezing his jaw. I was kind of freaking out and felt like I squeezed it pretty hard. The student and I were fine, but I think my snake is traumatized. He his for several days under his half log. I ended up bringing him home and he still seems to be in attack mode all the time now. He comes out of hiding when he hears noise and moves very quickly sometimes snapping at the glass, although he has gotten better with the snapping part and it has been about four days since I moved him to my house. I have not held him since. Suggestions? Can they remember that kind of trauma?