My RAH was weird like this for months right before he went in for rehab.
He once spent several days telling me that he was concerned for the soul of our child, because I did not go to church, because I integrate buddhist and metaphysical ideas into my spiritual path.
Mind you, HE has never set foot in a church, but was raised to believe he would go to H*ll for that.
I was nervous that when he came out of rehab, he would become as you have described your husband. Only because he is extreme and is as yet undiagnosed with whatever personality or mood disorder he does have.
The judging is common for a dry drunk.
The extreme thinking and black and white views are also.
The walking on the beach talking to his father sound like borderline mental issues to me.
PEople do this when they are going through spiritual awakenings, no doubt, but, it sounds like it is ungrounded.
Bottom line, he is not recovering, but stagnating, and relapsing.
If he is out of your life, and out of yur house, thank your lucky stars, because the chaotic world that that would bring is unworkable for people in the real world.
Keep posting.