I don't see what was unanswered. He described it as the head ref looking for the fall and the 2nd ref watching on top for any illegal or potentially dangerous situations. That is is how it is supposed to be done. The head ref didn't see it but the other ref did see it. When called to the table it sounds like they requested he confer with the 2nd ref. The other ref saw it so the call was changed. Sounds like a by the book correction. Am I missing anything?