You are judging a competition that is a qualifier for the Grand Prix, run under JRs Art 238.2.1. An athlete turns his horse very tightly in order to take a short cut from obstacle 6 to obstacle 7.
However, while turning, the horse goes a little wider than required, and almost runs into a wing on obstacle number 11 without disturbing the obstacle in any way. In turning the horse to the right in order to get back onto the desired track, the horse appears to take one small step backwards. The athlete/horse jump the entire course with no knockdowns.
How would you proceed in order to establish the result of the athlete’s round beyond doubt?