I was not able to see all of the CSU game. Regarding the O-Line struggles, were they having trouble in pass protection in non-blitz situations? If the struggles were basically on blitzes, that I'm afraid will fall back on Mitch to some degree. If a team keeps blitzing you, the QB has to show the ability to punish the D by completing passes to receivers in single coverage.
You do realize that tons of teams (including ours) utilize zone blitzes these days. Its no as simple as 'blitz means everyone's in man' anymore. Teams drop ends and tackles and disguise things all the time and if the line isn't picking it up properly you can't expect a QB to save the day. Sometimes the routes are longer developing or a QB rightfully expects something to be picked up and someone blows an assignment. The QB can't play with his head on a swivel watching the pass rush. Its especially silly to blindly blame the QB for plays you admit you haven't even seen.