And how do you think they were able to do that? Because the South Ossetians kicked out the Georgians. The Georgians had every right to leave Russia but conversely the South Ossetians had every right to want to stay.
South Ossetians and Georgians hate each other, mostly because the Georgians massacred a lot of them in 1920 (because even then they wanted to be part of Russia).
Do you believe that most Ossetians want to be a part of Russia?