Even then, I would have a real hard time calling a reach on the defender if the guy is falling on his own.
I didn't see the reach from upstairs, and my line of sight was directly in line. The TV angle was the same one Corbett had behind the play, and he didn't call anything.
What I think happened, just like the first time Starks took a dive, is that Stephens saw him fall and felt like he had to call a foul. So he made up a block.