There is a difference between just putting down the drug and recovery. It's great he stopped using, but that's just the beginning. If he's not going to meetings or finding any support group to help him learn to live well sober, then you can expect much of the same.
Often we blame bad behaviour on the drugs and are suprised when they get clean to see the same kind of behaviour continue.
What matters most, whether they are using or not, is OUR recovery because that gives us tools to deal with whatever comes along.
Have you tried meetings yet, because if you haven't this might be a good time to begin. And if you have, this might be a good time to find a sponsor to help you get past the abuse and into making good choices for yourself.
Hugs