if you search the web on this motorcycle steering thing you will find plenty of sites that talk about it - they call it countersteering.
Some of them dont understand the physics behind it - but some do:
http://newton.dep.anl.gov/newton/ask...ysics/PHY3.HTM
BTW, after thinking about this, if you did lean your weight to the right the uni-wheel would preceed to the right, and turn right - but it would be very awkward to do, esp at high speeds.