Originally Posted by
cwd
When I come to a stop on a grindy squat, I can get moving again by shifting my hips back. This extends the knees a bit but throws more work to the ass. If my ass can handle the extra load, I can complete an ugly rep and it proves my quads are the weak link.
If my ass can't handle the extra load, I fold up like a taco and fail, proving my hips and ass are equally weak. But this doesn't happen to me as often as completing an ugly rep.
There's less margin for this kind of ugly save with a high bar squat, leverage against the back/ass is worse. Folding up is more likely.
This is partly why I hate high bar even though it's how I squat right now to work around a shoulder problem.