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Russian media saw Snowden in Yasenevo back in 2014. Yasenevo is GRU headquarters, not FSB. Also if he indeed has "freedom of movement", he hasn't been using it too much - he was never saw in any public place, never met with journalists or fans, basically there's no evidence of him actually being free to do anything. Regarding your mention of "policy of never interviewing for Russian media", there's also no evidence of him having freedom to any policy.
https://web.archive.org/web/20150627191516/http://lifenews.ru/news/120547