The problem with this entire question is that there is a lack of consistency.
I'm no great fan of Russia but if one thing has managed to retain its salience it is the pull of romantic Russian nationalism. It is very much the basis of the appeal of Putin.
In addition, the support of small nations to achieve independent governance is clear enough, Kosovo being the latest example.
In this situation, isn't it clear that the two renegade Georgian provinces should be able to return to Russia if they wish? They are not ethnically Georgian, their inhabitants regard themselves as Russian, and they are Russian citizens.
And whilst the Georgian leader may have designs on joining NATO, hasn't this been made extremely unlikely? Does NATO really want the equivalent of a yappy, bad tempered terrier snapping at the heels of the local Great Dane?