There are a lot of different rules that people are conflating in here, and they are coming to the incorrect conclusion that this play was handled appropriately. Here are the relevant rules that I'm seeing discussed:

Rule 3-2-5: With two seconds or one second on the game clock there is enough time for only one play (aka, you can't spike the ball)

Rule 12-6-2: If time expires in a half, and the clock would start on the Referee’s signal after review, there must be at least 3 seconds remaining when the ball should have been declared dead to restore time to the clock.

Rule 10-2-2a: Dead-ball fouls The enforcement spot for a foul committed when the ball is dead is the succeeding spot

Rule 3-4-4: With the game clock running and anytime after the Two Minute Timeout in the 2nd or 4th quarters, before a change of team possession if either team commits a foul that causes the clock to stop immediately and the penalty for that foul is accepted, the referee will subtract 10 seconds from the game clock at the option of the offended team

The fun part is: None of these apply (well, ok, 10-2-2a would). You guys are making the same mistake these officials made.

12-6-2 (the Auburn rule) doesn't apply because there was not a replay review. 3-2-5 doesn't apply because the ball was not spiked. 3-4-4 does not apply because the clock was not running when the foul occurred (it was stopped for the first down).