McCrane hits a slice ball, so the optimal place for him is actually right hash.
Him attempting from the left hash is akin to a right-handed golfer who hits a fade trying to hit the fairway on a dogleg left. The margin for error is reduced.
It's a small thing, but I would guess that right-hash v. left hash for McCrane is a difference of 5-10 percentage points on a 42 yard field goal. And, of course, when you miss by 2 feet, it makes you wonder.