Does he do any writing for soapies? He'd be a whiz writing for "Days of our Lives", or "The Young and the Restless" etc, after all he's been living in the delusional world of alcohol all this time.
It is almost impossible for him to cop the blame for "wrecking" his own marriage and life, and also for stuffing you and your family around for so many years. Much easier to dump it all on you, as you ride off into the sunset of your old life with him and face the sunrise of a new one full of promise.
Let Mr wimpy do his thing and quack to someone else.
God bless and stay strong.