Not sure if this will help but sometimes it is better to sidestep a doctrinal issue and come at it in a way that hits at whatever is left of their humanity (I know, a small target).
Some have already noted the pedophile situation. And, that can be addressed outside of the minefield of doctrine. However, here is another example:
I once asked my mother "If Jehovah (through his spirit direct organization) asked you to kill me, would you do it?" She said "Yes". That is the only appropriate answer for a JW. An answer of "No" means that they have set boundaries. If they have set limits on what they will or won't do for the "Organization" then maybe they have boundaries in other areas that can be explored. Just a thought.