For me, national scores - not just rusnats, watch USA nationals or Canadian nationals for some insane scoring - should not be looked as absolute values. They ARE inflated.
So questions like "how come she got 80 with a fall" are meaningless.
The main discussion point would be if the order is correct, and if everyone was overscored equally. And here, I'd say that Sasha was scored fairly compared to others. SP is always her weakness, and this specific SP highlights her weaknesses (unlike her FS). If anything, she probably was overscored compared to some less known skaters who actually had the same tech content. I mean, come on, she got almost same PCs as Usacheva (just watch both skates one after the other to see my point).
I understand that, by his behaviour after her skate, Plushenko expected her to get 90 at least and was upset.
Also, his interview quite clearly is not about fair scores, his interview is about "his" skaters not being placed above everyone else.