I appreciate the feedback. I don't know if I'm just being stubborn or don't have an eye for my own form issues, but I don't see my back angle changing dramatically on most of my sets. The most recent videos were a 5RM so of course my form is not going to be perfect. And as I said in an earlier post, this is how I squat on all of my sets pretty much. I have long ass femurs and it's just not possible for me to squat ATG with an upright torso.
Also, just to clarify, most of those squats are to parallel (albeit one set that I completely got lazy with, all of those are embarrassingly high). The others are definitely not deep and I can't deny that, but they are to parallel. I'm a powerlifter, that's all I care about.
I'm squatting today. I'll try to take a video without the safety bars so I can do some screen shots. I tried to do it with the vids I have now, but it's hard to see with all of the equipment in the way.