Amen to that, Sav! Forget dealing with him in any way, shape, or form - unless you want a one-way ticket into the funny farm. I'm sure there are those successful people who can detach and live with an active addict, but in my experience I've only known one or two. Most of us go out the door and make sure it doesn't hit us in the caboose as we leave.
When enough is enough and we are REALLY sick and tired of being sick and tired, we leave. Some leave and go back a number of times. Some just hit the ground running. You'll know when, and if, you're ready.