Hm, okay I don't know much about it but I've been told it's basically about deep relaxation, and then playing a memory, but in some funky distanced way by using imagery (looking at yourself looking at a video screen). Then I think the memory is played backwards in your mind to bring down arousal, by processing the memories in the higher visual cortex. I don't know too much about it, I'm waiting to receive some more information because I'm a bit nervy at the prospect.