LOL @ BPS!

I think the term 'detuning' was dreamed up by the guys who erroneously think tuning the bow to shoot perfect bullet holes in paper makes for a perfectly tuned bow. Then they find out the bow won't shoot broadheads the way it should, so they have to make adjustments.

They are 'detuning' the bow from shooting those perfect bullet holes in order to make their broadheads shoot straight. To my mind, they are not detuning at all. The paper tune has given them a rough tune and they are fine tuning the bow to shoot broadheads.