I am one of those who sent a letter through my attorney threatening legal action if they announced my name from the platform. As a matter of conscience, I wanted no further connection with the organizaton. I had been out for over four years by then though. Also, they had no information about my personal life or beliefs other than the fact that I was unwilling to shun my son and wasn't going to be a hypocrite and pretend I was. If they wanted to believe I was depressed or stumbled, I didn't argue. I ignored all forms of contact from all JWs except two doorstep "shepherding calls" in two years. I was pleasent, but didn't let them in and gave them nothing actionable. You don't owe them anything. Using your own mom against you is dispicable.
I still have occaisional contact with rank and file members I may see in town. They don't shun me, so I'm guessing my letter worked. I seem to be on the "do not call" list though, because they do skip my house when they are working my street.
Don't give them any information to use against you. As others have said, they may not even have their "two witnesses".
Wishing you all the best,
Diane
http://www.jehovahs-witness.com/topic/436340001/matter-conscience-am-resigning-from-christian-congregation-jehovahs-witnesses