Hey Mate
Here is a different point of view - but I had the good fortune of my wife waking me up so I cannot speak from experience. But I was an elder of 13 years before I faded.
If you can emotionally handle it meet with them. Use this situation to expose how nasty these bastards are by letting them mistreat you - of course stand up for yourself though. This may get your wife thinking. You sound like a really good guy and if she sees the injustice she just might start seeing things for what they are.
On another point - a great way to get your wife thinking is to watch documentaries about other faiths - there is a good one about people escaping the Exclusive Brethren and another one about the Mormons. Of course witnesses love a good expose of another faith but if she watches it she will see they have the same structure as the witnesses and could help her start to think.
Hope this helps mate. I was PIMO for 3 years as an elder and it was torture so I salute you my friend and applaud you for sticking by your wife too. Feel free to PM me anytime you need support