Wishful thinking
"... he'd just leave El Reg forever..."
Unlikely. This is the sort that just thrives on attention, like the five-year old who's learned his first swear-word from his elder sibling and knows it gets a reaction.
The best we can hope for here is some kind of Eadon-esque meltdown where trolling eventually spills over into the realms of libel - and a similar end result. Openly admitting to staying in order to troll people seems like a good start down this road though.