My thought had to do more with if he had been operating under someone else's orders within the U.S. govt to intentionally play the role of a fabricated whistleblower. However, I can see how that might be a stretch based upon some of the compelling information released.

Sibel Edmonds seem to have some apprehension regarding Snowden's and his constiuents roles. Her stance is what triggered my doubts.

Some of her views on are not necessarily directed at Snowden himself, but they do raise some questions.

https://m.youtube.com/watch?v=ekhmXG_41Bc