He got his arm pretty badly nicked by the chainsaw but probably didn't even feel it - I remember he looked down and just smiled like to say - fuck you guys.
you know what I find strange to the extreme? just recently another beheading party was posted from mexico - one of the older guys and last one to be beheaded was lying on his belly his arm were NOT bound backwards but he had them just to each side of his head, the guy didn't cut his throat but actually stuck his knife from the top (beside the vertebra neck) and was cutting outwards which if you believed the screaming of the guy must have been pretty painful.
But he didn't move his hands ONE FUCKING BIT! I mean isn't that just a natural reaction that you would try to grab the knife?
This happened to me once - the "not being able to move when you should" type of reaction.
I was in the hospital and they couldn't effectively administer a local anesthetic to a pretty big wound before tending to it. So they had to get started before the pain killer kicked in properly.
Once they started, the pain was unbelievable...no other way to say it. I thought for sure I'd freak out and kick the nurse or roll off the gurney or something, but I actually didn't. The pain was so severe I actually froze from it. It's the weirdest reaction I ever had. I had no control over it. I wanted to move, and even thought about it, but was overcome.
Maybe that's what happened to that guy in the video you mention.