Of course you can leave the cult "gracefully" but you have to be aware of every move. Just like on this call, you had to be aware not to say anything that can be used against you. You took into account that someone could be listening (2 witnesses) or that it could be recorded. When elders come to visit, we know we cannot speak openly and critical.
Graceful would be openly stating you do not agree with the organization and therefore would no longer view yourself as a JW, yet to friends and family it would make no difference...