That's ridiculous, digging in the bucket would be just asking for trouble. Best case, keep it as straight as possible and ride it out.
Perhaps if you had a grader on the back you could dig that in but there's no way when your in a slide down a steep hill you would dig a bucket in. It would likely just break the shear pins anyways. Maybe if you just used the bottom of the bucket to create some friction but if it catches on anything then you very likely gonna be worse off.