I heard a bit about it. During a TED talk, I think. It's suppose to be breakthrough therapy for PTSD, with a high percentage of patients finding it unbelievably helpful. It definitely is something that has to take place in a very safe environment, though. It's the most intensive therapy I've ever heard of for the disorder. Not many places or mental health professionals provide it, though. At least, not in the U.S..
I can't recommend it or disprove it because I haven't personally went through this kind of treatment. Your doc might at least know of a place that would provide this therapy but probably only if he doesn't believe regular treatment/therapy will cut it for you. It was recommended to me but I couldn't afford the stay at the treatment center to go through with it. Best of luck.