It was a counter option, CPJ stated so in the post game press conference. SBNation has an article about how the play was messed up:
https://www.sbnation.com/college-fo...orgia-tech-two-point-conversion-overtime-2017
At this point, GT has four offensive players on the right side while TN only has three defensive players. If TQ had continued forward, the LB would have had to choose between tackling the QB and tackling the BB. The LB is the option guy, he is not supposed to be blocked. If TQ had kept moving forward, if the LB had gone toward Benson, TQ could walk in the end zone. If the LB had gone straight at TQ, TQ could pitch and Benson could have walked in the end zone behind the receiver. Benson wasn't anywhere close to the LB. If he had crossed in front of TQ as you suggest, then he would have slowed TQ down, and put both Benson and TQ in reach of the LB. It looks like in this shot, TQ is already turning back toward the middle. If he had continued along the designed path, it would have been a 99.999999% guarantee of a conversion.