It is always good to be ready for the Zombie Apocalypse but I would not trust that arrow. Heck man, what if it snapped on you while they are coming to eat your face off. Think about it!
haha pretty sure the arrow would survive a shot if the crack was duct taped. who know maybe the increased weight from the duct tape would make the arrow have a heavier hit on the zomibe.
You should disable the arrow ( take off the nock) if you are going to hang it on the wall so no body else will pick it up and shoot it. Or throw it away, that is much safer.
I don't think you'll have a problem with it. Most of my Easton XX75s have cracks and or holes in them, but I can usually get my arrows to hit within a foot or so of the target. No worries.