Just one quick piece of advice:
Don't write a letter!
Don't write to your elders, don't write to the branch. A letter will not convince anyone and it certainly won't cause head office to change and rules or policies. The only thing that a letter does is put a massive sign over your own head which says "Disfellowship this person".
I have two close friends who wrote letters of disassociation and they were both disfellowshipped. I found out from talking to a JW that an elder from their congregation had said to them "If only they hadn't written a letter, I could have done something.".
How is it that I was talking to a JW last week? Because I didn't write a letter!
When the word gets out, you may still be hunted down and disfellowshipped, but writing a letter seals the deal.
Once you're happy to cut all ties and be shot of the whole stinking mess, go crazy if you want, but while your situation with your wife is unresolved, tread cautiously buddy!