I'm quite certain that the wraparound effect does cause stats to reset themselves to 0. I *know* it does for piety and acumen, so this most likely happens with the other stats as well.

Quote Originally Posted by Caravel
It is 0 or negative, if the is a negative that is. For example if you have a 1 piety general with a vice that gives -3 piety, his piety would be -2. Of course it may be ineffectual but there are other "off the scale" stats, I think influence and loyalty are examples of this, so it may be true.
Just to clarify: In this example, the general's piety actually *is* 1. Otherwise, he would be at 4 piety were it not for the aforementioned vice. A general displays his actual, "real-time" stats, factoring in the character's various vices & virtues.