I usually just go to my partner and say something like, "Did you see the ball Hit blues foot/arm/head/crotch" Its up to him/her to decide if he wants to change the call.
Several times my partners have had such good looks all the way down the endline (2 person) and not changed their calls. All I tell coaches if they try and get on me, "Coach, you should have this discussion with my partner. I will make sure and tell him you want a word with him at my earliest convienience."
I wont ever sell a partner up a river without a paddle, but I sure as hell will get out of the way and let him shovel his own poop when he insists on squatting down and laying one in front of me

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