2 minutes ago, Mavric said:
Let's walk through one of the plays that had WRs running free. It starts at the 20:10 mark of the video below.
We are in our base package with Gifford on the slot at the top. We appear to be running a variant of the Tampa 2 coverage that Tony Dungy (I think) made famous for the Bucs. Usually the two safeties have deep halves with the corners playing flats. But the thing that made the Tampa 2 distinctive is that the MIKE would have to retreat to the deep middle to help with that zone.
In this play, we have Kalu clear up on the line to run a safety blitz. So that leaves Eric Lee and Aaron Williams to split the deep halves of the field with Gifford playing flats. Their QB sees the obvious mismatch with only one DB to cover the two WRs at the top and checks to throw there. As you can easily see in the replay, both Weber and Barry know from the start that they are supposed to run with the inside receiver to their side. It's just that Barry has no hope of keeping up, especially coming from where he was lined up.
So there doesn't seem to be any confusion on this play. Even a backup LB know where he was supposed to go on a pretty complicated coverage call. He was just put in a position where he had no hope of actually doing what was asked of him.