Was it that guy? I thought it was thrown by the ref standing right by the first down marker. Didn't the replay show that? I guess I'll check on Tivo later.
What is interesting is that, in replaying the game recording I have, you can actually hear what Gio said and then a second or two later hear the whistle that came with the flag. Gio yelled/screamed pretty intensely: "That's a first down." He yelled it a second time, a little more intensely: "That's a first down." No flag either time Then he yelled again: "That's a f***in first down." Then came the whistle and the flag. So that's how it happened. If you have a Tivo or DVR recording, you can hear it in the background at the 2:48 to 2:49 recording time into the game.
Could the ref had eaten the whistle? Absolutely. He actually did for the first two yells from Gio. Was it wrong to then throw the flag? Absolutely not. Some refs would, some wouldn't. Players know that, particularly seniors. I don't see any reason to get on Gio about it. He's been a good soldier. But it was a mistake that brought about the risk of getting a flag.