Funky new old-skool power lift

Today was one of my first days at my new weight lifting facility! Oh hell yeah!
Despite a nagging illness (cold, flu, allergies, who knows) I ventured into the gym preparing myself for the worst: turbo-ninja-powerlifters, women dressed to be seen, and a whole lot of people competing for my squat rack! While I did find all of this, I saw something quite interesting - a man who had a fighters build was doing some kind of whacked out lift that was absolutely wild, contorted, and looked like it required extreme balance and a generally well rounded and powerful physique to pull off. It looked something like what you see below




(yes, I'm lazy and didn't care to reformat the alignment in the html. get over it.)
Naturally I asked about it, and learned that it was known as the bent or screw press and was 19th century strong man's exercise. Sweet! I now know an awesome old world strength training motion! However, I have no clue how in 1906 Arthur Saxon managed to lift 386 lbs over his head w. 1 arm.....