Wrong.
Everything he said and exhibited on the video was consistent with his previous statements. BTW, he didn't "Do" the video. He was asked by LE to accompany him to the scene as a reenactment of the events to the best of his recollection.
In addition, this is routine in a case like this, where they take the victim back to the scene and video him depicting the area and what occurred at the scene.
Only someone with something to hide would not cooperate.
This happens all the time in cases like this, for good reason.
It also gives the prosecution a road map on how to attack his testimony. He should have saved it for the trial.
This was stupid on his part.