Left tells err'body to go left except LG and the back that's getting ball.
Exactly, and since the WB is closer to the LOS and further from the QB than the 3's normal spot, he doesn't have to do a counter step to get out of the FB's way.
Left also tells the LG to pull to the hole.
5 T G C G T 6
4 1
3
2
Left backfield motion is 2 going to LT's inside hip, and 2 running his 35 pitch motion and faking his pitch catch when he's not getting the ball.
At the snap the 4 is following the LG thru the 2 hole. RT is trapping the LB.