Oompa,
I've quitted JWs, my wife is still in and we are still together, not even starting to envisage separation, simply because we both think that no religion is worth breaking a family, unless of course one of the partners turns so fanatical that it would make common life unbearable. I don't know all the ins and outs of your situation but is it really so in your houshold ? just saying that, under near normal even though less than ideal conditions, staying with your spouse is possible, and even to be wished (you both said YES once, even in the face of potential adversity), if only to show the WTSers that you are the one, not them, controlling your family life.