There's a funny exchange between some guy and Andy Gerst on that YouTube page
SummerOfGeorge97: Andy, that was one hell of a shot at 2:25. How much of that ability would you estimate was due to your mustache?
Andy, TW: @SummerOfGeorge97, Honestly, I blacked out and didn't even remember doing it. As the mustache grew, it sometimes took over my brain, and forced me to do things I wouldn't normally do. Kind of like that Jim Carrey movie The Mask. That shot was one of those times.