Damn Bino those videos were hilarious.
Couple key things gleaned from those vids.
1. Don't use a thumbless grip while benching.
2. Don't bench with hand/wrist perfectly straight because it can lead to thumbless bench loss.
3. Some people shouldn't lift weights.
Jesus I saw so many benches where it just fuckin pops out of their hands. WTF is that. I have never, not once had something like that come even close to happening.