Look. I am from Siberia, and I have family there. I know exactly how flying there and back feels, and how to Skype with the time difference. It just requires some prior planning and it is NOT a big deal. Which is why I believe that this couldn't be a reason for moving from Detroit to St Peterburg. If he moved to Ekaterinburg, or, failing that, Magnitogorsk or Nizhny Novgorod or even Omsk, it would have made significant difference for family reasons. But moving to St Peterburg or Moscow doesn't improve things in that respect significantly, compared with being over here. Therefore, he is motivated in his decision not by family but by other things. So just say so, no reason to imply family hardship when you are not going to relieve it that much by moving. That is my only point. I don't like when public figures assume that the public is dumb and would eat up anything they say.
Look at my previous post. I think family is a small factor. I think it was moreso because he wanted to play in his home country. Maybe he got sick of Detroit, Michigan?