Scenario, Object ball goes inside the pocket, then comes out without hitting the rail, is it a legal shot? OB does not hit a rail prior to going inside the pocket
Only the willfully obtuse are still claiming good hit. Worse than them, are the ones condemning Yapp. It’s a professional match, with a full time professional referee. You don’t call fouls on yourself, under those circumstances.
Coming from a British cue sports background I think you should call fouls on yourself even when there is a referee. We always do on league nights if we think we've fouled even when the referee doesn't call it and pro snooker players have often called fouls on themselves when the ref has missed it or alerted the referee if they feel the balls haven't been replaced properly and they've gained an advantage. Appreciate every culture is different, but I wouldn't want to win that way.
I am willing to give Yapp the benefit of the doubt that maybe he was uncertain himself, which would be one way you could interpret his facial expression.
If the ref makes the right call, it’s 9 to 5, with FSR breaking. Is he a favorite from there, obviously not. Is he capable of winning the next five racks, obviously yes.