Actually, he was offered his job back, but didn't take it up. It's unclear if the offer was before or after he won an appeal against Waterstone's dismissal (it is not unusual to get an offer for reinstatement but still run the employment tribunal process to win compensation for the dismissal). But in the meantime he'd gotten an offer from Forbidden Planet to run their blog, and apparently reached a settlement with Waterstone's instead.

As far as I can tell, he still runs the Forbidden Planets blog (as well as his own at http://www.woolamaloo.org.uk/ ).