I think it would be awesome if they played along on this one and then followed up a few days later explaining that the tin-foil hat crowd was right and that the information was in fact leaked by the government in an attempt to discredit Snowden and Greenwald.

If I ran a news business and was approached to disinform the public, to me that is a huge story. I would milk it and play along and gather as much irrefutable evidence of willful acts to mislead the public and then drop that story later on.

If you simply say that you won't play along, you lose the opportunity to discover how deep that rabbit hole goes.