I'm afraid your efforts to analyze this section of the game pales in comparison to that of the UGA fanbase. We've been agonizing over this for the last seven days solid. It's not possible to dwell on a loss more than this one, as we'll constantly be second-guessing the what-if's about this year's SECCG for the next 30 seasons.
It's been well documented that the OC Mike Bobo was the one who called down to Richt to go for the fade play. With his hindsight goggles firmly on after the game, Bobo has said that it was his call and he wishes he had it back to have Murray spike it. The rationale on the entire drive was that the faster the offense went, the more Bama was on its heels. If the fade to Mitchell had worked, even if he was shy of the endzone, he would've been able to step out of bounds and they could get another play in. The problem comes in when the Bama DL tipped the ball, Chris Conley instinctively brought the catch down at the 5. On any other play, he would've been heralded for his receiver instinct to make a play where there might not have been one. Murray has had his questionable calls at the line in the past, but this wasn't anything more than his following his OC's orders, which were confirmed through CMR.