I would like to apologise if I came off as mocking or joking. I was trying to help you calm down a little, I wasn't trying to be mean. I agree with gsarchie, he should be fine just give him some time alone and I'm sure things will go back to normal soon. If he doesn't take the mouse the next time try a smaller/ younger size just in case he thinks they are too big (they sometimes don't remember how big their usual meals are and get intimidated by something they think is 'too big' for them). Treat for mites and clean cage when necessary but no handeling until he calms down. If he is that young, putting a book on top of his lid will prevent an escape and black construction paper on 3/4 of the tank walls may help him feel more secure and stop the roaming. Hope this helps