Rules Question on strange D1 Ending (Video)

[Coach Bill]

Many offensive players get bumped while trying to rub off screens. Most of the time, the official passes on that contact (i.e., no foul). But, now if the contact moves him a tiny bit and the offensive steps on the line it's a foul, or if he is the first to touch, it's a violation. I guarantee the good officials are going to deem this non-voluntary, and play on.