I feel for you SIAM, I really do. I personally though think that your personal integrity is more important.
I don't have kids, but I am married. My wife is not a strict JW, but believes it's the truth. That prevents me from pulling the band aid off because I still want to be supportive of her, namely socially. She's not completely open to associate with non-witnesses. So I have kept up appearances, only in the form of attending the meetings fairly regularly. Everything else, including the ministry, I have stopped, though I will do the occasional talk, bible reading.
I'm generally a very social person. So I don't fear walking away and loosing "friends." I KNOW I can make other friends, and I already have. That doesn't trouble me one bit. My problem or worry is having to divide my time between my wife and my new friends, if she's not on board to associate with them. And that honestly, I'd say, is the only thing keeping me in right now. Otherwise, I just could care less.
But the children factor has definitely got to add weight to the matter, and I'm saddened that you have to face that, just because you want to be honest with yourself. I wish mental peace for you despite these circumstances and hope you can reach a comfortable consclusion in your life. My thoughts are with you and anyone else in this situation. Eff the organization for doing this to people.
CoC