Funny thing is that it would certainly hurt the Steelers. It would also hurt the Eagles because they're in the same division as two teams with owners that would be more than willing to spend - Cowboys and Redskins - and also in a division with a team from the largest market, the Giants.
So while he's going on about protecting the interests of his constituents, fans of the Steelers and Eagles, revoking the anti-trust agreement would be horrible for both of those teams!
The real reason for all of this is to pressure the NFL to allow Sunday Ticket everywhere. Right now it's not available on Comcast, it is exclusive to DirecTV. Part of the NFL limited anti-trust agreement includes making the games equally available for all Americans to watch. This was taken care of with a local game in every market, and then the national game. Now with many games strictly on DirecTV and NFLN, one could make a point that the spirit of that law has been broken.
Specter has actually been
bringing this up since at least 2006. Even more interesting is that one Gregg Easterbrook
has been reporting on this same story since then also.