It seems that the harder that a person goes opposite of their spouse the harder they push back.
That is how it is with my wife. I quit cold turkey with meetings a few years ago for a bit and my wife all of a sudden had "friends " from the congregation to encourage her and she got all religious on me.
I went back to some of the meetings and didn't push my beliefs on her and she wasn't as religious. I have slowly been fading and she is slowing down too.
So my advice is to take it slowly if you can deal with the bullshit and he might slow down in the religion too.