CDL 06 07 "mishap"? (and a few other ?s about AT 07's DVD)

[Bad Wolf]

I went back about 8 pages to see if this was discussed, but didn't find it. I hope it wasn't lurking out of site on page 9 >>;... anyway, what I wanted to ask was: in the beginning of the Secret Tour documentary, Ayu & staff are discussing the "mishap" during Countdown Live 06-07 - I was wondering if anyone knew what that was? I havent seen CDL06-07, and I don't know if they edited it or tried to work around it on the DVD release, so I'd go watch it but....

Also, just a few random things I thought were funny (and kind of wanted to share/ask about as well):
-- Anyone else see Shuya trip and fall during the beginning of "Until that day..."? Poor thing totally faceplants right behind Ayu.
-- Princess and... the first keyboardist (I can't remember his name!!) were waving and kind of dancing with each other at the beginning of "Boys & Girls." I thought this was adorable :3
-- Ayu's feathers completely collapse during "Boys & Girls" and Go-mi tries to fix it - yet, oddly enough, whenever the camera zooms out so you get a wide shot of the stage, Ayu's feathers are totally fine. Heh.

Those last three bits aren't really important, but I was mostly just curious about what happened during CDL 06 07. Thanks to anyone who helps out