Yes that video is a beaut. I bought my copy in the early days of ebay from a seller called Year-of-the-rat. It turned out to be a copy and freezes a lot when I am trying to play it.
What I particularly like about the Quest videos is that you can tell they aren't edited from a million takes to look slick. If one of the shihan isn't doing it right, you not only get to see them not doing it right, but you also get to see Soke rebuking or correcting them.
It is heartening for those of us struggling at a far lower level and also teaches us the valuable lesson that if someone's taijutsu is too aesthetically pleasing then it is probably not being done correctly. It also proves, although MMA events have also proven this over more recent decades, that the flashy looking arts with all the fancy kicks, theatrics and muscle flexing are not necessarily very practical.
It can be a case of Van Donk vs. Van Damme!:ultracool
p.s. no news yet on the secret 'den', sadly we may have lost everything, but hopefully a phoenix will rise from the ashes.