"!" is supposed to be given for jumps with unclear edge - that is, flat or too shallow to clearly identify. Evgenia's Lutz was unfortunately a full-blown flutz, which can be seen clearly if one looks at the ice tracings/body position. Her blade traces a sort of reverse "S" shape, first doing an arc on an outside edge, then bouncing back on the inside one.
Here's a screencap of the a moment she reaches back - http://i61.tinypic.com/9zss1.jpg
And here's the take-off - http://i60.tinypic.com/14dew6e.jpg
If you save both images and watch them quickly one after the other (I recommend IrfanView, you can browse through images using the mouse's scroll) you'll see that Evgenia's blade traces a "C"-like arc on the ice, which means she switched to the inside edge before the take-off for long enough to negate some of the counter-rotation (which is what makes Lutz a Lutz).
I love Evgenia's skating, but I think the harsh penalty for wrong edge is the right thing to do, and the only thing that isn't fair is that it wasn't implemented as soon as CoP was introduced (and now some of the seniors will suffer for the sins the old mindset that deemed changing edges on the take-off acceptable). Evgenia is young at talented, and still has time to fix her 3Lz.
I can't find any older videos of her programs so I can't be sure, but it'd guess she worked on improving her 3Lz edge recently and doesn't feel very confident about it yet, so she used that long glide with free leg assist to concentrate and get her body into the "right" position. Hopefully, as she commits the jump to her muscle memory, she won't need to think about it so much. Despite the long preparation her take-off edge was actually very clean.
There's nothing wrong with using "tricky" entrances - quite the opposite, I think that (as long as the entrance is fast, fluid and confident and results with a take-off on the correct edges) it adds a nice element of surprise (and, usually, boosts the GOE). I liked Midori's "Lutz" entrance ito 2A, Ashley's spread eagle (making people expect 2A) into 3L, etc..
Two problems with Rin's Lutz was that the pause between the preceeding steps and the actual jump was too big to satisfy the SP requirements, and it was a bit UR (not enough to get <, but enough to get a GoE deduction). Rin did receive a significant GoE deduction, so I think the overall result was fair.
ETA: I checked the protocols from last season's junior Nationals ans Rin didn't even attempt 3Lz in either of her programs, so it's no wonder she stalks it a bit. Good for her for landing it here (and adding a 3-3 into her SP)!
