first vid. well more of a shortcut to multi. vids.
http://www.youtube.com/results?searc...grappling&aq=f
flipped though a couple of them and noted that the people they had portraying the "grappler" were people of the same class. Not grapplers themselves. the stuff they were showing is the typical "answer" most TCMA present when confronted with the shot or clinch. dropping weight, pushing forward into lunge stance and trying to drop either elbows or whatever. Had the "master" showing a modified sprawl type of move in the one vid which isn't a bad way of dealing with it but still not addressing the issue of MOMENTUM. None of the vids had any insight into that. If your going to demo a defense against the shot/clinch then you should do so in real time. Not in slow motion format.
here is some defense for the takedown in full motion.
http://www.youtube.com/watch?v=WSHGKQwICaE
second vid you posted.
some unorthodox things that wouldn't work against a skilled person. I would like to see that same demo in full motion with a resistant opponent that has some skill. the guy wasn't even in a guard postion, with his legs out loose, and letting the situation be dictated. which it was a demo i'll give it that. but fish hooking and pain application while on the ground is not a very favorable approach to controlling the opponent. I would also venture that if I looked into his background i would find he studied in a grappling art.
still waiting for that vid, your trying lets try and see if you can find one that is used against resistance. good luck. :p