If a monster pushes me into another monster or object (for example, a combo pushes me into another mob, or a skeleton jump pushes me into a tombstone), I am -NOT- able to shield, or turn, or move at all until I make a sword attack. Shooting my gun doesn't get me out of the clipping. During this entire time I'm generally getting beaten on since I'm immobile and unable to shield. It's killed me twice so far, and I've now noticed when it happens.