The writer Stephen King describes his intervention in his book On Writing. His family gathered and told him he was killing himself and his wife told him if he wanted to commit suicide via addiction that he needed to leave the house. Then she dumped out four garbage bags full of beer cans, mouthwash bottles, cocaine paraphernalia, etc.
He wrote that he agreed with everything they were saying, then asked for two more weeks. Looking back he likens that to a man on the roof of a burning house telling the firefighters who are there to rescue him from imminent death, "You're right, I need help, come back in two weeks."
Of course now he has been in recovery for many years and is open about his involvement in AA, but it's interesting to look back on the way he describes his thought process as an active alcoholic/addict.
Your AH has gotten sober before, he knows what it takes to get sober and live in sobriety. Do you think he's sincere? What is preventing him from beginning his recovery now?