Well, now, Terry recently removed Brain Teasers from the selection pool, to prevent a similar predicament. Maybe Common Bond questions need to be removed? Of course, in Common Bond Quizzes, really, the only problematic questions are the final question of each quiz, which is usually a fill-in-the-blank. So there would either have to be a requirement to have only FITB for the last question in Common Bond, or Common Bond quizzes would have to be removed from the pool altogether, I suppose.
Speak less than you know; have more than you show.