So what are your boundaries if he chooses to drink in your home Jarp?
I'm sorry you are dealing with this, but it seems all of that needs to be clearly put on the table up front again
as we alcoholics have selective memory when it comes to consequences for our drinking.
He's been "honest" in saying he's ready to drink.
What your reaction going to be and does he know it?
As an aside, these are the same people telling you he's "testing"
as told you you should let him move back home with you and the
kids no matter how you felt about it, right?