ThatTowerGuy has a limp wrist, so that's his issue. LOL. But honestly, I have seen it happen once on his ski after being pulled from the inlet. Ski fired up, when shut off, stopped abruptly, and you can here the prop still spinning.
I have seen it a few times. Normally when someone is porting the transfers to thin. This started as a small hairline crack, hit it with a dremel on low speed, and exposed this lovely hole. Tig welded and back into service.