well i managed to hear the audio to Bizi's link, finally, and also found an article that pretty much says the same things Anderson recounts:
http://www.flightglobal.com/blogs/ai...on-flight.html
Seems to me, in the best of hypothes, the guy overdrank his bladder capacity via pre take-off cocktails and indeed perhaps tried to be discreet (???

) about not soiling himself or the seat.
But i've also heard past incidents of arrogance on his part, so it would not surprise me if that is what it came down to... i guess we can't really know.

~ waves ~