This is why it is ridiculous that the ISU will only accept protests within 30 minutes. It has taken the entire internet almost a month just to investigate the footwork sequence. How would an athlete be able to do this, at the competition?
Well, I analyzed Yu-Na's footwork as soon as I had a good recording of it (less than a day after the event) and determined that the level call was blatantly wrong. I didn't bother to look at Sotnikova's footwork at that point, because between the lack of an underrotation call on her 3Lutz+3Toe combination and the wrongful call on Yu-Na's footwork, it was already clear to me that Yu-Na deserved to win.
It was later on when I when noticed how relatively short Sotnikova's step sequence was (25 seconds) that I suddenly questioned how she received a Level 4. Skaters generally need to spend at least 30 seconds on the footwork to get a Level 4 with the way the rules are right now. So I looked at the sequence closer and saw that, no, it was not a Level 4. To prove it, I wrote down everything she did in the footwork sequence and then did the same for Yu-Na as well. It's a quite tedious process writing it all down (the tech panel does not need to go to nearly this detail during competition), but that's the only way to actually prove it.
Aside from further exposing the poor judging (and cheating), this all goes to show that the footwork rules NEED to be changed.