Perhaps more to it than there seems

Mysteriously, a few months ago, a similar thing happened with a group for 2007 Imperial College London freshers. I can vouch that there was nothing dodgy/incriminating in there, and we were all completely baffled. The group vanished for a couple of weeks as the creator tried to get some kind of response from Facebook. When they eventually got back to her, they said it was removed in error and will be restored very shortly, and so it was... I think it must just be a case of Facebook Absconding Group Syndrome