I don't know enough about Russian Orthodoxy to back this up, but I would have assumed that contraception was viewed as against doctrine. Whilst I appreciate the Catholic church is very different, it has extremely strong views on contraception - which are often cited as out-date and inappropriate, but certainly I would image that Orthodoxy, being even more beholdent to its traditions, would be opposed to its use? Clearly with their 'extreme' devoteness I would have thought N&A would be the last to go against this???
In fact the "Assembly of Hierarchs of the Russian Orthodox Church condemned abortion, contraception, pre and extra-marital sexual activity as reasons for the collapse of the Russian population" only last month! It is one of the pillars of Orthodox doctrine and whilst it might seem outdated now, a century ago it would have been viewed far more seriously.