an injury occurs on any play, even on field goals. it's not anyone's fault. receivers can tweak a knee just by doing some "harmless" blocking.
Just found it. Turns out Schaub wasn't being pressured (around the 0:12 mark): http://www.nfl.com/videos?videoId=09000d5d8028238d Schaub just didn't see the safety, or he thought Andre could handle him, or whatever. Get well soon Andre.
I remember the play in my mind and I was upset at Schaub for leading Andre incorrectly. This was before finding out that Andre was injured on the play. Schaub is improving, but it does seem like he leads receiving into getting drilled at least a couple of times a game.
he is only 26. i don't think we can jeapordize his career for fantasy implications. just try to get into the playoffs and he will help you a lot then.