I would advise against making a statement that you are leaving, no matter how private or public. This is because there is much gossiping in Diamond Way groups, and word will get around, no matter how much you may not want it to. Remember that the people in these groups tend to only be your friends as long as you are in the group. As soon as you tell them you are leaving, you may well be harassed,
Forum:
"Cults," Sects, and "New Religious Movements"