If results last even a few months, then I agree, it means during that time a person can work hard on their trauma so that when it wears off, life becomes a lot better.
I do wonder about longevity... I also wonder if these can be given one after another, ie. when it wears off, do you just go back for another shot? What are the consequences of extended shots of this nature?
If this does work, and has a low failure rate... then whilst not a cure, it could certainly allow one hell of a lot of people with PTSD time to just recover without all the problematic symptoms. Even if a person could get this for two years straight... that amount of time feeling normal and working out past trauma, is enough time for the brain to do a lot of healing, without constant re-traumatisation.
I wonder what the implications are if trauma is endured during the period the shot is working?