1. Didn't know it was you but reading it gave me the feeling of reading about superman. With claims like this it's good to say where the info was found. My Grandfather once told me "Believe none of what you read and only half of what you see".
No offense to you but I take the "trust me I was told by someone but won't mention names" stories with a grain of salt.
I'm not debating what you see since I don't understand what you are teaching so could you explain what you are seeing in the video and how Mifune's throw would differs from the average Judoka?
You just said it was pointless. Stick with your grandfather. Lets see, reading...no good, seeing no good...Did he tell you what to do when you keep landing on your ass?