"Dave" wrote

He was awful close to a prop strike - at the very least. Perhaps it was
intentional - note that he did a roll right after the near miss. I
don't think that anyone who had just had an unintentional near miss
could regain his composure so quickly.

Although he was way too close, there is a possibility that he was not as
close as you think. I saw another performer that looked like he was way too
low, even below the runway.

Is it possible that there is a dip, and the runway is lower than the
surrounding ground?

Still, no loss, no claim, no foul.
--
Jim in NC