Outwest, I noticed his hand wrapped in leather too. Just watching, it looks like he starts out with proper spined arrows then goes progressively lighter. You can see he starts out getting good arrow clearance then you see a couple where the nock is coming in and striking the riser. Even a couple flu'flu's look weak. Then you start seeing the total noodlification start to happen. The first one he has some sort of cloth on his fist and arm then the one that breaks, he's wrapped in leather so he obviously knew it was underspined. Still pretty cool.