My final statement on my Thread started on the Forum:

To sum up:I feel that more initial guidance should be given to members wishing to start new Groups so that deletion can be avoided by obeying the Owner's rules (whatever they may be). In particular, should the Owner of Truenudists decide to delete a Group, he should notify the Creator of the Group beforehand to explain why. A reasonable time to amend the Group to comply should then be offered before total deletion takes place.