I think he goes for it in this situation when the game is not on the line. Like you said, the kicking game has been shaky and that presents a 42 or 43 yard attempt. Certainly no gimme. With an athlete like DK at QB, a big RB like Terrence Williams who is hard to bring down, I like an outside RPO in this situation.
FWIW, I was fine with the call to go for it on 4th and 3 right before the half. At that point our defense couldn’t stop TT at all and we were always one missed tackle away from giving up another long TD. When we turned it over on downs, there was 1:57 left (according to the play by play on ESPN, but not sure how accurate this is) and Tech started their drive with 1:53 on the clock. Even if we punt it and pin them at the 1 yard line, they start that drive with 1:45 or so, which is an eternity with their offense. If we can go into the half with a 3 - 7 point lead, and assuming we get the same TD to start the 2nd half, now we have a 10 or 14 point lead which is exactly the kind of cushion our defense needed. I think at the time CMA decided to go for it on 4th and 3, he knew our only chance to win this game was to just outscore Tech. We couldn’t rely on our defense at that point, and I fully agreed. Sadly it didn’t work out.