I removed the portion of your post that was nothing more than a long, rambling recap of what I'd just said.
As for the paragraph I left: As you acknowledged, if the ref was talking to someone on his headset, that person was inside the stadium, whether in the replay booth of on the sideline or somewhere. There are only so many people who could have been in a position to access that system, and the school will have had to issue a pass to every last one. So, like I said: this can't possibly be hard to figure out.
Good lord you're ignorant on this subject. THE SCHOOL DOESN'T ISSUE "PASSES" OR HAVE ANY ACCESS TO THE SYSTEM. It's not a school system. They are totally closed out of it.
I am personally familiar with the system used by the SEC b/c of my work. The same system was being tested (along with 2 others, last I heard) by the B1G but I don't know if they purchased it or not.
* The system was purchased by the conference and is maintained by them (with a technician's help). The school doesn't provide it and they didn't pay for it directly (meaning to the vendor, anyway, they may have had to pay the SEC for them).
* These things are outrageously expensive, like high 4 to low 5 figures each.
* There is no base station or central unit. These devices talk to each other only.
* They use unlicensed frequencies but the communications are heavily encrypted.
* Some units are configured for listen-only, some are talk and listen. There are specific rules about who can talk and who can't, so the devices have to be configured accordingly.
* By rule they can only be used by on-field officials. Only the head Ref can talk to or hear the replay booth.
So, since the SEC supplies the units, only they really know how many are there or are in use. Everyone knows, b/c of the rules, how many there are SUPPOSED to be, but no one can really check the officials to be sure they are complying. You just have to take their word for it.
If the Ref is only allowed to be talking to other officials who are on the field at that moment (since the booth was off-limits b/c the play wasn't reviewable), and yet he clearly appears to be talking to someone else, then an explanation from the SEC is due. And the school has no way to possibly investigate it themselves.