In Intermediate the official flight starts when you come out of the reverse wingover upside down. He was simply flying some maneuvers to see if all is well. He can now do the reverse wingover and proceed along hoping he will be able to finish the pattern before running out of fuel.
....LOL if he remembers and figures out the flight is not yet official. Randy
A certain Top 20 flier did this at a contest last summer while I was judging. We didn't score his flight, charged him with an attempt. Same contest, a past World Champs competitor burned two attempts for his first round flight, then buzzed the prop on takeoff for his 2nd round flight. Wisely, he waved off the flight (throat slashing motion), then realized it was his last attempt, and proceeded to fly the pattern. We were not inclined to notice. I don't know of any hand signal that rescinds a throat slashing signal, but maybe that famous Italian one? Steve