Just rewatched it...
5 officials are visible during the play: The
Referee,
Umpire,
Side Judge, and then the
Back judge and
Field judge are under the uprights.
- The Referee (white cap) is the crew chief and the one that has New York in his ear. He did not blow the play dead.
- At no point before the camera leaves the LOS was there any indication that the play had been stopped. Not from the 5 visible officials, and not from the players themselves.
- I would have loved to see if the Down Judge that McCarthy was talking to intervened before the snap, but I just don't think it's his job when it comes to replay.
- The only indication that something was weird was that the Field Judge didn't indicate the kick was good (though the Back Judge did).
We can't definitively say when the intervention came from the booth, but it's clear that it wasn't early enough for the 5 officials and 22 players on the field to play the down in earnest.
This is absolutely inexcusable considering the 1:40 that elapsed in between the plays.