It looks like you did Green, but did you not go to #11?
BG training, skipping a control..
#10 sure looks like a good skip. That's actually an interesting exercise, thinking about which controls on this course would be good skips.
As you stated though, I skipped 11, inadvertently I admit....as I left 10 I had a plan for 11, noting to take the 2nd trail up the hill, but I got distracted by some groups, and when I looked back, I focused on 12, and went for that trail... Oh well.
A list of big faux pas in one's O experience would be humorous. I recall running by a flag once, the flag visible, due to distraction of another runner. I know there was one time when I/we couldn't find the local meet site, way before cell phones.