Bottom line. I was worried about plot instead of just writing. After demonstrating the use of my "idea board" to the group, I figured I ought to get out the Post-its and update mine.And, as a reminder, my "idea" board is full of more than just ideas for possible scenes or plot threads. It's also full of questions and reminders. I don't plot much, but I do recognize the importance of tracking.
For example, on my current board, I've made notes that my hero (who was injured in some yet-to-be-determined cop incident) was injured, and that it's his right arm and left leg. I can refer to that in case I forget and have him favoring the wrong leg or rubbing the wrong shoulder.