Wow, I missed all the skating action today. I'm downloading the high-resolution IN video right now, but I had a peek at Yu-na's Youtube video:
http://www.youtube.com/watch?v=-PYle36v_dk
I thought the performance aspect was amazing, possibly better than SA. But the jumps looked iffy. The 3Z was rightly downgraded, it's very obvious from the slow-mo in the YT video.
The 3F... Well, Yu-na has rather unusual technique. If you watch the slow-motion, you can see that while her upper-body continue moving backwards in a flat line, her left ankle dips down and she's literally on an outside *edge*, I say literally because there are two edges to the blades, and she's clearly making contact with the ice using the outside rather than inside edge. Nevertheless, as a whole, she's continuing straight without going into an outside *curve* because the rest of her body is leaning the other way. If you weren't looking at her blades, you'd say that she's on a flat or even a very shallow inside curve. If you only looked at her blades, you'd say she's on an outside edge.
Now, when most people speak of inside and outside edges, they're really thinking about the *curves*, and usually this is not a problem, because an inside edge produces an inside curve, and outside edge produces an outside curve. Especially with respect to jumps, people speak of lutz being harder than the flip, because the flip involves a shallow inside *curve* in the motion that goes *with* the rotation of the jump, whereas lutz has a shallow outside "curve" in motion that goes *against* the rotation of the jump.
With Yuna, she's really literally on the outside *edge* but not making a visible outside *curve* -- so especially if you don't have slow-mo and can't see her left blade clearly, you'd think she's not on an outside edge. And also in terms of the mechanics of the jump, she's not on an outside curve so she's not counter-rotating against the jump during the take-off.
However, all definitions of flips and lutzes (that I know of) still define them in terms of the *edge* not in terms of body rotation, so I think if a technical panel wants to take that definition literally, then they are right to give Yu-na's 3F an edge call.
One might argue that the definition of flip/lutz ought to be changed so that it really reflects *with* versus *against* body rotation during preparation, but first of all, it would be very hard to assess rotation, especially in borderline cases (whereas the edge you can pretty easily spot with the right camera angle), and secondly very very few skaters have Yu-na's technique of having an outside edge and inside curve on the flip, or vice versa on the lutz. So considering a change in the definitions now would only affect Yuna's case, and there will be an outcry of unfairness/favoritism no matter which way the decision goes.