Thanks, guys. I'm benched again.
Riding my bike has made my back flare up really horribly again. I don't know what's causing it. I stretch, I hydrate, I eat... I'm going to try raising the handlebars to more of a casual commuter's level and see if that helps any, and I'll raise the seatpost a bit, too, to further extend my legs on the downstroke.... Haven't been doing this because like most casual bicyclists in my area, I like to be able to put both feet on the ground. Looks like I'm going to deal with being wobbly for a while, because I'm getting real tired of not being able to be active.