Turns out my wobble was indeed caused by a bent wheel... Discount took the offending wheel off the steer axle and placed it on the inside position of the drive axle... better... but still a bit of a wobble...
Sears (Sears!!!) was able to straighten the wheel on some kind of machine ($25) and all is now well in the world...
As far as the Cooper Tire drama goes... well... haven't had them on long enough for a qualified response... I chose them for their inclement weather ratings (responses from people who owned them)... we tend to 'push the season' around here... this is what our towed looked like when we got home from our late spring gathering in Moab...