Would it work though? Not sure how I would do one from an account though. I would of thought he would of had to of agreed to the transfer himself.
Well someone did it to Jeremy Clarkson didn't they, when he published his bank details a few years ago and dared someone to try it. In this instance he couldn't do you for stealing, since that is exactly what he has done. But yes he's probably spent it. Maybe try a tenner first to see what happens then fleece him! (Again I accept no responsibility!)
Pretty sure there are no checks. Of course you can't just go doing it to anyone because they will notice and inform their banks. But he couldn't, since I suppose he would risk exposing himself and his dirty tricks.