Are the game records (nevermind video) available, or would the sgf of how Li Qincheng beat Shin Jinseo make some nutjob Japanese nationalist assassinate Lee Sedol?

There's no indication of the SGF game records anywhere for the moment. I am sure at least the final game will be published in the Chinese Weiqi Tiandi magazine later this month (around 15th) - the players may be asked to record the games by themselves.

We only need to be patient.

sgf of the final (only) now on Mr Kin's site:

One semi-final game between Li Qincheng and Lee Sedol is now available.

http://www.go4go.net/go/tournaments/news/6/28

Why didn't Lee Sedol make the bamboo joint on move 136 rather than 168*? At that earlier point won't black answer, but in the game black traded because by that point the stakes on the right side fighting had raised and it seems Lee got a raw deal.

* And I know one suggested answer could be "Because it is also a ko threat and professionals are loathe to waste ko threats**, and cutting is so big you would expect it to be sente anytime or else big enough compensation if ignored", but I don't buy that as it was possible to anticipate the high-stakes fighting Lee then embarked on (and if we believe that stuff about "pros read 100 moves ahead" (I don't without big caveats) then it should be easy). So either my judgement Lee got a raw deal was wrong; Lee should have done so but didn't (maybe because it's a blitz game); if he had Li would have played differently and compromised in the fighting, but is that really worse for Lee than losing one ko threat; or something else? Seems like the proverb "Make a fist before striking" about removing defects before launching an all-out assault applies here.

This is a 30 seconds per move game. No way anyone can read 100 moves or even 50 moves ahead. I think Lee had a reasonable plan, but did not manage to carry it out in a perfect manner.