Uh, no. Watch the play again to refresh your memory.
http://www.nfl.com/gamecenter/2017091001/2...&tab=videos
Massie gets beat, and there is pressure coming from Leno's man on the left side, but Glennon inexplicably runs back into where Brooks Reed is circling back to when he very easily could have taken a few steps towards the right and had more than enough time to make something happen. This was going on the entire game, because Glennon has no idea where the defense is coming from.