My ex used to act much in the same way, and even threatened divorce on a regular basis. After 18 years, I had enough even though I owned a home and had 3 children in teens. I told her one day, the next time you threaten to divorce me, I will walk out that door and never come back. It worked for just about a year (that was a long time) then she did it and I walked out that night.
I spent the time until then getting my ducks lined up in a row. Yes, I took a big financial hit, but as my lawyer said, it is just short term... In 5 years you will be better off financially then her, in 10 years.... and in 15 year... and he is right. I now own a new home and she lives in a travel trailer even though I walked away from our home and let her have 100% of the equity. There is no amount of money in the world that is worth living with this on a daily basis. You will be better off in the long run. I know first hand.
Prov 21:9,19 - I remember one time, during one of her bitching sessions, I walked out of the house, put the ladder up and went and sat on the roof. When she eventually found me and wanted to know what the hell I was doing up there, I told her to go read Prov 21..... she got the point, but still did not help in the long run.
Fast forward 10 year, I have a new life, wonderful wife, we love and respect each other and have never been happier. My ex is still the same misserable bitch that she always was, crazy and can't find a man that wants anything to do with her on a long term basis.
If you don't work directly for a Jdub, you can excape the cult without having to move too far away. Just transfer to another hall where you know very few people in another close by town have your card transfered and after attending a few meeting, stop going, they may call on you once or twice, but in general if they don't know you very well the new congregation won't put too much effort into getting you to come back. The fade away and enjoy your new life. Best of luck!