Each of us has to decide on our own exactly what steps we
are going to take. The ONLY major, major thing is to make
sure that you follow through with what you say. Threats do
no good...in fact, they encourage the poor behaviors.
I, for example, could not follow through with a threat to kick my son out. Many others here have done so. It's your
game in your ballpark.
My gut (as a complete stranger to your family) says that he
has s.a. problems as well as depression. It's hard to be able to separate behaviors. Sending good luck hugs. DDD