I just googled this for more information. We are in Fairfax County and ended up getting court involved with our kid, for very different reasons. It was not a great situation and it is a long hard road. Ultimately, over 14, they still will need his consent for anything.
Have you ever called the mobile crisis unit? They could be helpful for you in this case.
If it gets to a point where he’s a danger to himself or others, they take him by force in handcuffs for an evaluation if you call 911. It’s something to deescalate a situation in the moment, or at least ensure safety. I’m wishing you the best. It’s a nightmare to go through this with your child.
If it’s any consolation, we are on the other end and things did get better years later after a few very rough years.