I have mixed feelings about this. To me, it is a matter of the appropriate time.
I remember a couple of movies that triggered me in the old days.
One was "Brubaker" with Robert Redford. In the beginning of the movie, one of the inmates was a black man, who was stripped from the waste up, then tied to some prison bars, then prison guards beat the shit out of him with a leather strap.
In another movie, the original "Walking Tall", either part 1 or part 2, I don't remember, I think it was part 1. A prostitute was stripped totally naked and laid out on a bed while they beat her with a strap. My dad did this to me, and this was definitely a trigger. I did not get up to leave, and watched it through, but it was horrible. I knew how that girl felt, and I felt sick for her.
I only have mixed feelings because in my case I don't think it was particularly helpfull, therapeutic or anything, in my case, at that particular time. I don't think it helped with any healing, and just made me feel horrible.
I have written a lot about what I experienced in 2004, and how I believe PTSD is curable.
During the summer of 2004, I was kind of curious about what I was now like. My wife and I went and watched "Passion of the Christ". He was severely flogged for half the damn movie. It did not trigger any kind of "horror" or any of the old feelings. I even told my wife, it wasn't a realistic depiction of a person getting beaten to death.
But I do believe, at that time, there was something therapeutic about facing this scenario.