I got sent this website by another friend of the search today. Seems like they even have stumbled upon our website here a time or two (and make notice of the MSU possession of a volume of the Russian Course, which I posted on Reddit, so they're likely active there too)
https://caligula.org/Nature_Method_Institute.htmlHopefully it leads to more.
Also, if the author is reading again: I have actually seen several pages from the MSU work. It is the same work as the rest of them, in the same format. I had a friend request it via ILL in 2016, though he was unable to scan it before it had to be returned due to family issues. He sent me pictures, though I've since cleared out the Telegram chat it was on. I'll see if he still has them, and reupload them. I believe it was just of a few pages of it.