Well, Corky, it doesn't seem like you should scream or cry to me. I think it's great that he's alive and feels well enough to get out. Of course, I do understand why you are so frustrated with his choice, but he made the choice all by himself. I frequently find myself cooped up from my health issues and when I have a good day, I tear into it like it might be my last.
Maybe he's just rebounding from the major scare he has just survived. Let him have a little space to stretch for now, he's probably still in a coping mode.