Lorelei, yeah, don't move out. You're not limiting him from being an involved father. My WAH pulled that on me recently. I'm not buying it.
Plus, as a 43 year old man, it must be nice to be cared for by mommy and be shielded from reality.
When he grows up a little, maybe he'll realize the consequences of his actions and take control of his life. Until then, keep your side of the street clean.
Come up with a strict schedule that, outside of death, doesn't get altered. Flexibility can come but if it starts off too flexible, it's hard to wrangle it back in.