I can only suggest consulting with an attorney.
Find out your legal rights, as well as legal obligations.
Time to turn the focus toward yourself.
Seems you are so willing to go the extra mile for someone who currently has zero desire in helping himself.
Court ordered rehab is not a guarantee, the only thing that is going to fix him, is HIM.
15 car accidents ? 2 motorcycle accidents? it's only a matter of time, before innocent people are hurt by his selfish, wreckless actions.
Time to start protecting yourself and your assets.. Hope you call an attorney, and begin to start forming a plan B.
Sending you support.