Just a brief update.
I've been rolling. And I decided to switch back to my old running shoes (just to eliminate another variable). Ended up doing a run/walk with a friend Friday evening, and then a 7 mile run with my running partner Saturday morning.
Guess what?! No Knee Pain.
Both efforts were quite slow, but getting through them without knee pain resulted in a huge boost to my confidence. Oh, and I still plan to make the cupcakes. ;-p