I remember seeing this on TV E4 its not the first clip Iam on about but I bet he does not do that effect again in a hurry. It's the 2ND clip I want you to see it really shows the importance of practising, especially when using a spectator.
http://www.youtube.com/watch?v=oaUXxadeo4c
http://www.youtube.com/watch?v=oaUXxadeo4c