Keith,

I think the answer to you question is that most turning on a bicycle (especially at speed) involves minute direction change; at most a couple of degrees. Because of this, turning is not a problem. Most direction change at any speed is done by leaning, mostly.

Low speed, sharp turns do cause the *inner* leg to sort of bow and the *outer* one to stretch, but it's no big deal, and is very easy to learn.

Tom Traylor has a website for his MBB FWD bikes, check it out:
Tom Traylors Moving Bottom Bracket Front Wheel Drive Bikes