No, it doesn't. Snowden isn't the one who's been releasing these documents; the journalists are. For your claim to make any sense, you'd have to believe Der Spiegel is secretly working for the Russians.
Also depth of Russian penetration of security services and media in Europe.. in many places it is quite complete. It would not actually be surprising at all if Spiegel had someone working for FSB/GRU.
Having said that it is not 100% certainty. If he was not turned before the disclosures then US whistleblower witchhunt that drove him into arms of FSB is even worse because he really had no choice once US started hunting him.