You're not an idiot... and frankly, it's the fairest thing that can be done. It's not like you're saying regardless of the circumstances behind any incident, if anything happens the person is barred.

I do see the point about enforcement, and if Ed's not enough, I'm willing to step in.

If it gets to that point, though... [He spreads his hands.] it's gone much farther than just someone throwing a tantrum or being stubborn.