I am not omnipotent, however I am judged to be competent. I don't consider myself just a random guy on the internet, since I do maintain an accurate profile here.
As for your squats, first, this video is a little dark, which is making it difficult to see your hip crease. I *think* what I'm about to tell you is right, but it might be subject to change if the lighting were better and the camera angle a little different. Tow pictures that I took from them will illustrate. In any even, all appeared to be borderline acceptable to high, but #1 was only a bit high, if that. #2 and #3 were the worst, and you corrected a little bit for #4 and #5, getting lower again, though still possibly high. At this angle I can't see what your knees are doing (with respect to driving them out), or get a good assessment of how far apart your feet are, but if I were there, I'd probably have you turn your toes out a bit more, and drive your knees out a little farther. You need to reach back just a little with your butt, your back angle is a little high and your knees are a little farther forward than your September video above. Stop trying to initiate by throwing your hips back like that - just break at the hips and knees at the same time. Pause the video at the bottom of your first rep of the September video above. That's a nice position right there. Do that.
Question: Are you having shoulder issues, or are you concentrating on other things and letting your elbows get a bit low? If it's the former, move your hands a little farther apart so you can get the back up a bit more.
All in all, though, a big improvement, but not as nice as that first rep from September. Can you think of anything that you a thinking different from then? What changed? Those are the things that you need to be thinking of!
Finally, tell the dude in black with the red bandanna to quit blocking the fucking view. I was trying to scope the chick.
That's it. Here are the pics
Bottom of Rep # 1 Sep 09:
Bottom of Rep #1 Feb 11: