NFL making coaches film available to the public

The NFL’s effort to grow the proverbial pie finally has invaded the Holy Grail of football footage. Starting in 2012, the online NFL’s Game Rewind feature will include access to the mysterious and secretive “All-22″ coaches film. Spotted by the folks at Deadspin, it’s a nonchalantly-added wrinkle to the one-penny-less-than-$70 package, anyone who buys Game Rewind…