"Matthew Stafford watched it once, before the Lions played the Bears for a second time last December.

Jeff Backus studied it like he does every play. Assess what happened and move on.

Jim Schwartz saw it three times -- live, the next day on film and like Stafford again in December -- and he doesn't care to relive Julius Peppers separating his quarterback's throwing shoulder again.

"We don't obsess over things like that," Schwartz said Wednesday."