Today was supposed to be squats, but I was able to tell that my knees were not up to the task merely from warming up with bodyweight sets. I walked home. The form practice was worthwhile in itself. In retrospect, I probably could have done light deadlifts without issue. That was completely beyond me at the time.
I have a number of policies to implement before I cut down to a more comfortable weight. First and foremost, I've been supplementing with Champion Nutrition's "ProFlex", which is simply an embarassing title for a glucosamine, MSM, and chondroitin tablet.
I've been shadowboxing daily to the point that recording each session would be like writing everytime I eat.