Maybe the H back was supposed to climb instead of cave the end inside.
Oregon runs a ton of ZR where they read the defenders at linebacker depth instead of the guy they CAN seal on the edge. Making the next level guy the read.
Zone read isn't always just the d end being read, even though NCAA 2014 would have you believe.
We realize that, but they also blocked every linebacker. While the DB is cheated up, he's still deeper than the LBs. Unless Cotton had a massive brain fart he was supposed to block the end (let the family jokes ensure), he goes to engage him immediately and that's the only guy he looks for at the snap. Sterup's technique is interesting, he uses it again for the quick pass on the ensuing play. Something I've always loved about our scheme is showing similar blocking for both run and pass, I've seen it mostly with pulling linemen in the past.
NCAA 14 has reads off of ends, backer, tackles and DBs. :P