AB, that might be right in the world of statistics, but in the world of officiating, it was definitely a pass. Rule 2-19-1 in the NCAA book says, "Passing the ball is throwing it. A pass continues to be a pss until it is caught or intercepted by a player or the ball becomes dead."
It mentions nothing of whether it has to be forward or backward to be a "pass." 
I understand that in officiating, there is such a thing as a backward pass. I also understand it is commonly (and mistakenly) called a latteral.
But I also understand that the NCAA does not recognize backward passes as "passes". For all record keeping, including passing and scoring records, stats, and reporting, "passes" can only be forward, which makes #72 ineligible to catch one.
Holmes did NOT "score a conversion on a pass". He successfully RUSHED a conversion.
There are other differences. An example: #2 back to receive a punt (excuse me, a scrimmage kick). Ball comes down and bounces off his head, and the kicking team recovered. To an official, that's a muff. But in the NCAA records, that's a fumble.
You can mark half the distance penalties in fractions of a yard, but they are only recorded in full yards. Even a properly marked 5 yard penalty can sometimes only count for 4. EXAMPLE: Georgia rushes the ball inside the 1. Since it can't be on the 0 yard line, it must be on the 1. The offensive tackle jumps the snap, false start. Ball is moved back to the 5.5 yard line. Since we count the advance yard line once the ball is no longer touching the previous yard line, the ball is now on the 5, and you just marked off a 4 yard penalty!
