Thanks Mags - that article helped! Explains a lot of other soreness I was experincing.

I rode in spin class twice this week, then got out w/ the club this morning. It was mainly a climbing ride, but I felt strong. I do notice that my quads still are pretty sore, but it's better than what I was feeling when I first posted this thread. Recoveries are getting a little quicker, and I am not overwhelmed by feeling like a slug

Thanks again for all the tips & advice!