Thanks big john and palookabutt,
Have scheduled the appointment with the doctor; will advise his conclusions. No apparent after-effects, so I'm probably going to do the club ride on Tues. evening.
Not on the Calfee though . . . I think bike fit (lack thereof) could have been an issue, esp. with my back. I've ridden that Calfee on eleven doubles, but haven't ridden it since Bass Lake, Oct. of 2009.
Will stick with my Ti-GT for the time being (shorter effective top tube).
Rick / OCRR