Snowden was a steward of the documents, albeit taken against the will of the NSA. Relinquishing those documents to journalists he knew to be technologically uneducated (remember, he had to teach Poitras and Greenwald how to use PGP and adopt the basics of computer security) cannot, with logical consistency, be considered as placing them into authoritatively safe hands.
In most cases, information disclosed to a journalist should be considered to be disclosed to that journalists' readership.
I'd be absurdly happy to be proven wrong, but there is a very high chance that every single document snowden distributed is on sale to the highest bidder, and has been for a while.
Paragraph 15 [0]
[1] http://politix.topix.com/story/6798-who-stole-computer-from-...
[0]http://www.nytimes.com/2013/06/24/world/asia/china-said-to-h...
> Two Western intelligence experts, who worked for major government spy agencies, said they believed that the Chinese government had managed to drain the contents of the four laptops that Mr. Snowden said he brought to Hong Kong, and that he said were with him during his stay at a Hong Kong hotel.
I believe that qualifies as a "claim by a government agency"
If what you say were true, then Snowden should just come back to the US. He doesn't even need a pardon. Afterall, he didn't disclose anything.. the journalists did.