It is neither a search nor a seizure when it is a voluntary transaction.
Third-Party theft is no different than a thief selling his "wares" to a pawn shop.
Incorrect analogy.
This is more like the pawn shop owner selling the pawned good to a new buyer.
Moreover, you are merely speculating on Snowden's "treason" and so-called "evidence."
It's not speculation. Snowden very publicly did this.
Eyes-Wide Shut.