What?! I've never read that, thank you for posting. As I was reading your post I was thinking this is probably physically impossible to accomplish.Just a reminder for CO elk tagging requirements:
"Proof of the animal's sex must be left on the animal's quarters. If it is a bull, you may to choose leave one testicle on each rear quarter, or both testicles on one side with the penis on the other. With cow elk, you leave the udder attached, possibly half per side."
Obviously COCPW author never hauled one out.