I guess there's no harm in telling what I know,
Hooly was on the reserve list for BB6, and was flown out to Spain ( I think ) by the producers to keep in hiding. When Kinga, Euguene and Orlaith came in half way through the series, for some reason they must not have decided to choose him for their list.
So either a) he was so disappointed that he wasn't chosen, he just decided to stop visting and posting on BB forums, or b) he wasn't chosen because of the posts on TiBB prior to BB6 about 'is hooly going in the BB house?' and maybe one of the producers saw, and he some how he blames us.
All this is guesswork, but it is very odd he never returned
- Mark