Very informative video, thank you. It seems like the pin had already seized in the plastic lever body and the sudden "snapping" sound was the teeth of the main gear finally pushing away the teeth of the pawl gear. Due to no spring pressure on the pawl, the teeth were barely touching. The defective plastic lever body is definitely manufacturing error. I have confidence your Stahlwille will continue to work normally under heavy load. It was a very unfortunate failure of a "non-critical" plastic part, and not anvil or gear failure.