Sounds vaguely like track standing on a fixed gear. It's more like balancing a broom on your finger than trying to balance yourself on a rail.
I really love bikes of all varieties, but I've never messed with a unicycle. They seem fun. My friend has one; I'll have to try his sometime.
Because you mentioned torque and such, if you never have, check out this book: http://www.amazon.com/Bicycling-Science-David-Gordon-Wilson/...
I picked it up expecting to read a chapter here and there and ended up cover to covering it. Great read
One of my favorite books on cycling: http://www.amazon.com/Bicycling-Science-David-Gordon-Wilson/...
Not much practical in that, that I remember, but tons and tons of random articles on odd-ball bike stuff. One of the few books I've purchased and randomly read most of a few times. Really great book.
http://www.amazon.com/Bicycling-Science-David-Gordon-Wilson/...
https://www.sheldonbrown.com/
(sadly Mr. Brown is no longer with us, but his web archive lives on)
And there's always Bicycling Science for the serious nerds among us
https://www.amazon.com/Bicycling-Science-Press-Gordon-Wilson...