"We want to trigger their anxiety in a safe environment so we can help them overcome it."
http://www.buffalo.edu/reporter/vol35/v ... kPTSD.html
The mistake being that you don't have to trigger the anxiety to overcome it.
So many so-called detraumatisation techniques work along old behavioural lines, thinking that you have to 'hold' the person in the presence of the feared object or situation until they become calm enough to decondition the fear.
What they don't understand (and so cause much damage) is that you can keep people calm throughout.
Roger
P.S. Sorry for the rant but I just heard about a kid who was abused from the age of 18 months by his mother being taken into a room where someone was dressed like her in an effort to 'cure' him. I have rarely heard anything so disgusting, and this in the name of therapy.