bluetail
The pilot of the Saturday display was called to the RIAT FCC to explain himself after he landed, I gather the conversation lasted more than the cursory 5 minutes and facts of life were clearly explained to him. He wasn't the pilot on Sunday.
As you'll see if you read my post #31 20 july 1402, on the previous page, that was not the case.
The pilot was not called to the FCC. He went of his own accord, after a conversation with another pilot, a Display Authorisation Evaluator. The FCC found that no rule had been broken.
He wasn't due to be the 'pilot flying' on Sunday.
I can't speak to what you saw from the North side.
airsound