XP may force you to go away if you consider XP more important than what you do.

One of the puroposes of the XP system is to feel the pulse of the Monastery. If you got -10 on your node, perhaps you've said something that you shouldn't have. In the specific case, ptkdb was blaming the system for his own mistakes.

Now, you can take it like a man, learn your lesson and continue, or you can boast in the chatterbox that the system is wrong, that people are abusing you and that you are right and the others are wrong.

In the first case, you know what to do next time, and you go on being a respected member of the community. But if you don't show respect for the community, it will let you know that it is displeased. -59 in a node means to me that a lot of people disagreed on ptkdb's behavior. If he didn't feel at home here, he has only himself to blame.