From CBS Sports NFL site:
Errr....if Denver's stunt blew it up, do you really think you could call it the "perfect play call"?28 minutes ago - by Chuck Finder - Sanders: 'We had the perfect play call'
The fourth-to-last regulation snap when Ben Roethlisberger got stripped? It was a pass play designed for Emmanuel Sanders. They needed “10 to 12 more yards” for a game-winning Shaun Suisham FG attempt, Sanders said. “We had the perfect play call. But [Denver] sent the stunt up the middle, [and the play] didn’t work.” Steelers RapidReports