remove floating extra prop hair?

this hair originally belonged to the guy just to the right, who has the same hair on his head but conformed to his original pose. now I cannot click on the extra hair and tell it to be gone. how can I get rid of it? I can't even identify it except by the name of the "good" hair, which disappears but this one doesn't???? no violence hear just overlapping fingers cause by moving the red haired one off the central pose spot...

drawn