I'm assuming that since we "have" an invalid fair catch, that it was flagged --- otherwise it wouldn't have come up at all in this post.
You ignore the clip, as it didn't happen. The play was dead regardless of the lack of a whistle at the R45, penalize K's coach from there. He has a little latitude (since WE screwed up, and HE is actually right), but that doesn't extend to marching out on the field yelling. He would gently be reminded how to alert the official to a mistaken ruling sometime between the time we mark off the 15 and the time he gets another 15 for blowing up at us because of the 15 he had already earned.
