Fuggedaboudit! Besides the fact they should play under the prevailing conditions since they made the decision to have it here, moving the date would be a total nightmare of logistics.
Small example - the son of a friend of mine who lives in Buffalo won an NFL Play 60 contest and they're coming in Saturday with all kinds of events and stuff scheduled leading up to the game as well as being on the field for the kickoff. If the date got switched they'd have to rearrange the flight, hotel & all the other stuff. Now multiply that (at least flights & hotels anyway) by however many 10's of thousands of people coming in for the game