Gnolfe's point is valid. In the described circumstances, there would be a 33 point penalty, however, I would suggest that if in the event that you had a choice in the matter, you make an alternate posting (in this case Chester would do the trick). I d agree it does seem a little harsh on the winning poster in cases such as this.
One further thing that I would point out is that in my time of scoring this quiz, which is quite a few months now (I've lost track of time), this is the first time I have needed to enforce this penalty.