The NFL Network has a nice video on a play the Broncos used to beat the Chargers here. (Sorry no embed capability from the NFL site, apparently.) The focus there is on the so-called "jerk" route, where the shallow cross receiver fakes like he is going to settle in the zone hole but then continues. (I'm not so sure that this isn't a read for that receiver, but in any event you'll get the idea.)
Readers might however find interesting the extended discussion of the concept I previously wrote up here. It is known as the "angle" or "follow" concept. In other words, although the Broncos throw it for the touchdown and conversion to the same guy, the quarterback's secondary reads are to the corner route and the receiver who begins like he's running to the flat but then pivots and comes back inside. The Broncos also use a corner route to the other side as well, unlike the post route I have drawn up in the diagram, above.