I have rewatched the game with that in mind and have seen that Burke was injured and fighting through it. Prior to the "look" he'd already been having issues, and I suspect that the coaches saw that, got his attention after that throw when he was running back, and told him to get down. It definitely benefitted us, but I don't believe it was an ongoing tactic.
The only other suspect one, imo, was on Hill after the 85 yard run... There wasn't any contact, but that big of a man, ran fast enough to keep up with that back for 50 yds of that gain, at the end of the game. Betting he was gassed and muscles just burning up afterwards.
Anyway, two cents from one who was questioning (emphasis on was).