The problem is that almost nothing in this game will carry forward to the MSU game. Indiana stinks, and we can't really evaluate how good the revamped OL is for that reason. Max-protect 2-man routes aren't going to fly well against Sparty's secondary, and the running game will be flummoxed to a much larger degree.
This game was kind of a one-off relative to most of the remaining schedule. The offense was fantastic in that one-off, but it still has much to prove.
Of course, the same can be said for the defense, the other way around.