Indeed, in which case why should we, a priori, treat some grabbers differently than others? That is, if we're talking about purely moral and legal considerations, rather than realpolitik.
I would disagree with you about Georgia. It's reasonably well-established that it was Mikheil Saakashvili who, in a bid to preserve Georgia's "territorial integrity", decided to change the status quo in South Ossetia in a rather aggressive and unmistakably violent fashion. Given the history of the conflict and the recorded cases of human right abuses by the Georgian paramilitaries in 1991-92, South Ossetia's bid for independence could be easily supported as "remedial". Under these circumstances, I fail to see how Russia could have behaved otherwise.