This would be completely ridiculous by the NFL. By all accounts Sherman practiced fully every practice and he definitely played in every game. EVERY single player in the NFL has some sort of injury by mid season. Any injury that a player can practice through isn't serious enough to need to be reported. If they choose to single out the Seahawks, it will sour even more people on the NFL as a whole, and Roger Goodell specifically. The entire league has players playing hurt that aren't on their reports.

Great way to start the off season.