So... how about those Pats?
They strategically blew the last part of the season so that they would miss playing in a snow storm! Belichick always knows what he's doing 
Jokes, but seriously, it's interesting that playing in Denver might actually be fortuitous, seems a snow storm would seem to favor Denver.
Anyway, on topic, I guess you can't blame them for precaution, but couldn't they just arrive early? Maybe you post-pone the game because you figure people won't be able to safely get to the game, but nobody is going to attend a game in Philly anyway.