Seems a bit strange to invent a hoax for tickets that at first glance have a value of, er, nothing - I don't really see the benefit, other than to be extremely annoying.
Anyway, I will not be getting an illegal pirate seat in the audience next week, having booked through the usual method, spoken to a researcher and received an email in the format Travis describes.
(...although I'm now starting to wonder whether that was a researcher at all. I mean, maybe she painstakingly went to the lengths of posing as a DOND researcher, hijacking the endemol email, breaking into the studio offices and going through all the procedure on the phone... all to deny me 2 seats in the audience when I turned up. It's possible...

)