Mostly successful fader here... I say 'mostly', because as long as your name is still in the books, as long as some family members or old friends still hold out hope you're just 'going through a phase', as long as you have not made a definite statement renouncing your association with the religion, then the past will always be there to haunt you to some degree.
I'm sure there are a few cases of someone just walking away, moving away, and losing all contact with all JWs every again, but that would be a rare instance. Most of us have family ties, and therefore that's why we fade. We want out, but we don't let the WTS call the shots on how we leave. We leave on our terms, but our terms aren't clear. It's coy, it's subterfuge, it's cloak and dagger... all so we can see our kids, our parents, our grandparents.
And quite frankly, even some DFd/DAd ones can't totally escape it. Anyone with JW family with which you have managed to keep some relationship with, despite the fading/DFing/DAing, has to deal with having been part of that system at one point.
In short, for most of us, death is the only real way completely and totally out of the JW influence on our lives.