He didn't relapse. A person has to be actively working a program, any program & have a desire to be sober in order for relapse to occur. I don't think your husband has ever had that desire to quit drinking. A person who get a DUI & continues to drink & not even admit has a problem has a very high risk of another DUI. His DUI & driving without a license like nothing happened seemed to be a wake up call for you NOT him.