Blue I can only imagine how hard and terrifying this must be for you!

I agree you need help with him. He's not a little boy anymore. 16 years old and non-compliant and dangerous unfortunately. I'm guessing you live in the US so I'm guessing it won't be easy to find help. There has to be something other than CPS.

I also agree with Hamster, being in that state it's like being outside yourself. Like in a dream world. Maybe taking pictures or videos will remind him when he's in a better state of mind.