Hi Kaliko
I want to say hi. For some reason my keyboard is not working so I will make this short. I am so sorry for your pain and your fear.
When my son was this age we were at a school wide introduction to the new school. My son was anxious. I saw him from about 25 feet back, with a running start go from the tip of the hood of a car (on top) to the top and come down on the trunk. all the while running.
With the threats and the attempt to act on them, what was your choice? You did the only thing you could do. There was another mother here in the last 2 weeks with a very similar problem with her 5 year almost 6 year old. You will find good information if you do a search. The thread is: How do you survive?
I do not understand? Each day was different or his behavior has been different there?
I would not feel so guilty. There are many, many children who of necessity go to the hospital, for all kinds of things. This is no different from any other hospitalization. On some level he knows he needs help. You are not rejecting him. You are seeing he gets necessary treatment. There was no other choice that I can see. At least no other responsible choice.
I will check back when my keyboard is working. Welcome. Take care.