Hi Maxheadroom
Well done for making a stand and putting your mental health first and that of the other people who live in your home. I fully understand how hard that decision is, how much guilt you can feel, the confusion of if it is the right thing to do etc. But for now make the most of the space to breathe.
Maybe it will be the making of him. All you can do is hope he realises he needs help and if you are willing to help him through those steps.
My husbands son was never held accountable for his behaviour so at 30 it hard to say this and that isnt acceptable as it just goes in one ear out the other. When you have one parent enabling and one not, the one not is the big bad wolf.
Stay strong, its ok to have bad and good days but have faith x