I think if the monster you're fighting puts you into deadly with just 1 hit, you automatically get knocked back. The only way to die is from multiaggro combos. Correct me if I'm wrong, not a melee person =x
This is exactly it. This is why people do low-hp sets. When you get into deadly, you automatically get knocked back. Then since you go into deadly, all you would need to do is use 1 hp 10/30 to completely restore your health, so that it can happen again.