I didn't initiate it directly, but I had that conversation with my wife back in April. She'd known for a few months that something was up (it'd been about a year being awake) and apparently my attempting to show her an article of how the mormons use the BITE model for control was the final straw. We talked a while and for a while I played it as if it was innocent for a while but when she asked me point-blank if I'd made up my mind that I don't want to be a JW I confirmed that I had.
It was touch-and-go there for a little while, but we've more or less recovered into a place where we can at least talk fairly openly with civility. It took probably 3 months before the random crying spells (on her part) stopped, but they tapered off after a while. I'll not say that the marriage has fully recovered, but I expect that to take some time...the year that I spent awake caused some significant problems due to her treatment of me for what little tapering off in cult activity that I did during that time.
On the plus side, I haven't been to a meeting or recruiting since mid april and she hasn't tried to get me to go either. She knows I'm done and I'm never going back and she seems to be accepting that part of the new reality reasonably well.
She and her parents (though not her brother, apparently) seem to be somewhat more liberal than most JWs, though. She's gotten upset about other people who have started to treat me as "bad association" (not complete shunning, but it's noticeable) because she doesn't think it's right to cut someone out just because of their privately held beliefs (but somehow she refuses to see that doing so is completely in line with what they're taught to do). So in that way she might not be completely typical.
Unfortunately, there are no guarantees here. I've read accounts of someone "coming out" in this situation and the responses seem to have ranged from immediate separation followed by divorce to the spouse relating that they too have had doubts and the couple examining them and leaving together.
I wish you the best of luck in whatever you decide to do, though.