Urgh!
I **** these kinds of stories. It makes those who buy into this crap and as in this case put rosary beads around a stump look like such fools. Let's just say for the sake of argument, if there ever was a virgin Mary and she is now this powerful spirit who can cross back into the land of the mortals why would she leave her likeness in a stump or a sandwhich or a tomato or any other object?
Now they're all gathering around it like it's not just a piece of slowly rotting wood and it's not hurting anyone, it might not. But it's keeping people stupid so it is doing as much harm as if it was actually hurting someone.
Idiots!!!