This explains a lot.
… Jones was a freshman in 2008 when he blocked for Knowshon Moreno, who could make a three-yard gain for what might have been a two-yard loss for another tailback.
“I know my freshman year when I was blocking for him, they just told me to cover somebody up,” Jones said. “Don’t even worry about moving him because Knowshon will make you right. Now we really take pride of getting him off the ball and making it easier for Isaiah so he’s making his cut four yards down the field instead of at the line of scrimmage. That’s big for a running back. He knows he’s got four yards from the get-go. Then he can make a move, and hey that’s seven or eight off the pop. That’s always nice to have for him.” [Emphasis added.]
As a run-blocking scheme, that doesn’t work so well once Moreno is gone, of course.
I’d call that half-assed coaching, except I may be giving too much credit. How about three-quarters-assed coaching?