I'm using a power rack to squat and press. So far I still haven't missed a rep (I started Stronglifts a few weeks ago), but I'm wondering what exactly would be the safest way to release the bar into the safety pins when squatting.
For bench press I can imagine myself just lowering my chest so that the bar doesn't hit me when I'm releasing it. However, I have no idea what I'd do if I was at the bottom of a squat and couldn't go up. Letting the bar roll through my fingers seems like it could break some of them with enough weight, and laying my whole body backwards until the bar hits the safety pins seems even more dangerous since my neck or head would be absorbing the force.
I have seen videos of people dropping the bar in different manners. What is the safest way?