Here's what Garrett actually said after the game when asked about why they called it:
"Just because we felt like the play clock was running down. Just wanted to make sure he had a real clean opportunity at it," Garrett said. "It was at about 6 (seconds), and we were still getting settled in, so we banged a timeout just to give him an opportunity to get the snap off and kick as clean as possible."
Pretty reasonable. They weren't settled, his ST coordinator asks for it, the HC calls it. They had two TOs in their pocket so there was no reason not to use one. Nothing wrong with that, at all. He got the TO off in time. I don't see how you fault him for any of that.
If you want to get on him, they had time to run a play and a TO to burn prior to clocking it. Even a short throw and a TO makes the kick a lot easier. Like I said, Garrett blew the clock management and possibly cost the team that game, but it wasn't because they called a time out before kicking it. The only reason people are mad is because Bailey made it the first time and missed it the second.