The people at this show looked plenty close enough to get a face full of debris if he had rolled it:
He kept a safe and mandatory distance from the well defined crowd line and was flying over a very large flat area.
If you can't see the difference between Dennis' well rehearsed and very precise flying and the yeehaa in the main video stunting for his mates then there is no hope for you.
That is something I had not considered. In your professional opinion, from the video evidence, do you feel that there were such over-speed events during the flight in question
not a question I expect fdr can answer since he wasn't in the cockpit and the video 'evidence' doesn't have cockpit instruments and indications.