I was as startled by Paul’s discovery as he was. I’ve gone and talked to legal about it. Basically, it was an error and it was never supposed to be in the T&Cs. We’ll be putting up a revised version by the end of the day, without that particular bit in it.
Hopefully, you’ll still want to come to the event. If not, could you e-mail me so that I can open up your space to someone else?