The ability of departing members to delete their content is something that is hard-coded into Ning. If I could change it, I would - but there's nothing that can be done.
Hopefully, most people will have the decency to simply leave quietly and allow their content to sit there. It always feels like spite when someone just presses the delete button as a last departing shot.
That took courage and initiative.
To be fair, I don't know what the hell happened because I only joined about 6 months ago (approximately)
For an idea, I think some people might want to help Emer since he was the one who found this blog so he must have got a lot on his mind so I guess he needs help. That might be the reason why he created a new administrative team.