I'm from Serbia and I never understood this quote and think it's misinterpreted. I know it's coming directly from the SAF, but really can't picture Vidic being patriotic and all that. Quote might be even a joke.
He is obviously my favorite United player of all time and I'm really biased when it comes to him, but in Serbia, people are very split when talk about him. Good portion of non - Red Star Belgrade fans think that he never gave his 100% playing for the NT, that he was faking injuries to avoid national duty, and there is even some conspiracy running around WC in Germany and against Slovenia, when he missed a penalty and many people (including media) accused him of doing it deliberately. Of course, I think all of that is BS, but I kinda agree with people here that he wasn't so passionate about our NT as he was about United.
Also, as he was our captain for many years, he was often interviewed and he never looked fired or remotely interested in upcoming games for Serbia, he was very apathetic, and I have never ever seen even the smallest signs of patriotism in his pre and post-game interviews (and I like it) - And people here, unfortunately, like to listen fired up and patriotic speeches.