Sometimes we over-think and over-analyze things. Here is a simpler explanation.
Against UNC (and UVA/Akron before that), Jake was off. Badly. If the QB cannot get the ball to an open receiver, quickly and in rhythm, the Offense will not work.
Hilinski took his place, threw the ball accurately against CSU and Alabama, and suddenly our playcalling and Offense were fine.
He had elbow issues prior to the Mizzou game, could not hit the broad side of a barn, and the Offense sucked again.
So....is it poor play calling, poor Defense, poor O Line play, poor coaching.....or just poor QB play that screws up the Offensive flow, causes short possessions, and leaves the Defense on the field for so long that they get worn down and give up late yardage/points?
And to add further....Hilinski could not connect with Edwards on multiple First Half passes. But the staff drew up a play at halftime that resulted in a 75 yard TD to Edwards on the first play of the Second Half. So the coaching staff actually came up with a good play and Hilinski executed it - but there was not enough of that, before or after that play.
Boom needs to be quick to pull Hilinski if he is not 100% and his throws are not accurate. Joyner looked good passing the ball against Mizzou and he adds the same wrinkle with the runs that Bryant added to the Mizzou attack.