It corners flat, I've had one up on two wheels and flipped one, I just lean with my upper body to counter.
If you would like to donate to the "buy Brian a mountain bike" fund I only need about $10,000, I would love to rip up some off road.
http://www.oneoffhandcycle.com/index.html
Oh and the tread name is "Getting in to Biking" so I think road bikes count
