I may have been unclear... it's about getting your ass into it, not cranking your torso forward and your hips back. Your butt kind of has to stick out (back) otherwise you couldn't engage your big butt muscles, right? A nice arch sticks your ass out anyway. It's why men like women in high heels.
This is the kind of thing that internet discussions confuse or people over think. This kind of thing doesn't seem to ever come up in the gym. Coaches just walk up and put their hands you and correct you.
"Morning, Putski eats it, noon, Putski eats it, night, Putski eats it. Putski loves!"