Did Snow give a reason why, or are you trying to solicit our opinions? If it's the latter, I say, so what!
This may be BIG news to you and others, but it's no big deal at all to me. Rumsfeld is in charge and if he chooses to kick any media outlet off his plane, thats his prerogative. Stop making a mountain out of a ant hill.
There are more important things to be concerned about right at this time. Wouldn't you agree?