The Plan B yesterday should have been having another QB ready to step in. But sadly, despite 2 weeks of the back ups reportedly taking snaps, they still didn't feel like they had anybody else to turn to.
A Plan B for his offense is, has been and always will be, non-existent. In one sense, Malzahn is no different than Paul Johnson or any number of coaches who are completely set in their ways and/or their ability or lack thereof, to adapt. Wes, you said when the offense is rolling, it's fun to watch. Troof. But chapters 1,2,3,4 and everyone thereafter in his book state that it can only roll when we're snapping it fast and hitting the middle of the line for 4 to 7 yards or more a pop. Do it again. Hit it again and again and again. Everything else works off of that. If that ain't working, the offense is dead in the water. Simple as that.
Pettway was out. KJ is maybe 65% and not the back for that job anyway. When that option is not available, he turned to a QB that is maybe 45%. And like you said, nobody stepped up to help a brother. Malzahn is no jeenyus. His offense is what it is and if the one thing he has to have to make it work is not available, you get yesterday. He's not changing any more than Les Miles would.