This has been discussed in bits and pieces in several different threads, but I thought it might be nice to have the sources all compiled in one place. I've done my best to provide some transcription although the audio is not the best.
Michigan State Offensive Coordinator Dave Warner post-game interview
skip to 1:35
Reporter: Is he [Lewerke] injured?
Reporter: His arm's 100%? Shoulder... (inaudible)
Warner: I'm sorry?
Reporter: His shoulder's 100%?
Warner: Seemed to me. Played all, uh, practiced all week long with it. (shrugs)
Michigan State Starting Quarterback Brian Lewerke post-game interview
First minute is about him being injured at Penn State and trying to describe exactly just how injured, but in particular, starting at 0:50
Reporter: When did you practice this week?
Lewerke: Uhhh I think coach D said I did not practice at all (possibly a couple other inaudible words).
Michigan State Head Coach Mark Dantonio post-game interivew
skip to 2:15
Reporter: ...and secondly, coming in, what percentage was Brian coming in, health-wise? Not asking you about specific injuries, just health-wise, what was he?
Dantonio: I thought he was good enough - well enough to play. Um, he didn't practice though. You know, he didn't practice Monday Tuesday Wednesday Thursday. But, um, I thought he was well enough to play.
Begin Editorial Section
It's very interesting that Warner is casual and clear in his denial that Lewerke was injured or held out of practice last week. It is very unlikely to me that the offensive coordinator could be unaware that his starting quarterback was injured. It's inconceivable that the offensive coordinator could be confused about whether his starting quarterback practiced last week or not.
Lewerke seemed to be comfortable describing the "iffy" nature of his injury but when asked the very simple question of whether or not he practiced, his response to defer to Dantonio's statement is strange.
As biased Michigan fans we are inclined to believe Dantonio is lying, making excuses and exaggerating, and that Warner was not brought in on the plan to lie or forgot to. We've seen this before of course as Brady Hoke sent a concussed Shane Morris back into a football game (presumably due to incompetent game management) and then utterly flubbed his attempt to support the lie Dave Brandon decided to run with regarding the incident.
If there is another explanation for the above interviews that does not make Dantonio and Lewerke out to be liars, I am interesting in hearing it. I know we do have some MSU fans among the readership, so I'm all ears if any of them wants to speak up. Temping though it may be I would avoid describing Warner or Dantonio as "Aware, but not fully aware", however. No good can come of that.