he had already shot the deer so what good would that of done, and your telling me that if you had a 180 1/4 to you and you had 1 chance you wouldnt shoot, i know its not a good shot but alot of men on here would of flung one, i sure would of tried to crash a muzzy through the point of the shoulder.
Since you asked (kind of), no I wouldn't have shot at a deer quartered to me. Not a good shot selection. No matter what size.
As a friend, I'd show him these pages for future reference:
http://www.bowhunter-ed.com/course/ch7_shot_strategy.htm
http://www.bowhunter-ed.com/course/ch7_setting_up_shots.htm
Good luck in finding the deer.