The way I saw it, I made a public declaration when I joined. It takes the same to leave. I was surprised how I grew once the 'severance' was final. Trust me...you will make new friends, and those who would rather support a cult?...you don't want them anyway.
However, the wife being a pioneer makes it difficult. Perhaps this bold stand would be just the thing to wake her up as well. By fading, she is lkely still holding onto hope you will return....
Just my two cents.