I've just spoken with jabberwoky, he was autobanned for 2 days after entering his POH and turning building mode on. He emailed several Jagex mods through twitter and had his friends make forum posts. He was unbanned within 4 hours.
I think he did get "autobanned" by the games bot buster system. There have been a lot of legitimate players that have gotten the two day ban. (similar to the automute system) It appears to be true since his clan chat is gone.