You absolutely did the right thing. He has a choice. He is able to get a job. Even if he has to take some crap job, it's a job. By his rejecting to talk about anything in his past shows that he has not even reached step #1 in his recovery. Pretending things are OK is not a solution. Sobriety is not necessarily a solution if you don't change your behaviors with it.
After all this time, you deserve to take good care of YOU.