Take a look at the video below (at 8:24 mark) and notice how a ref tells Devin Bush where to line up.
https://www.youtube.com/watch?v=R7I2xM-ubs8&feature=youtu.be&t=8m24s
As redditCFB noted, a ref likely shouldn’t be able to tell Bush where he needs to stand. The play led a solid gain by SMU as Bush was out of position.