Bonus Quesion: Can the defensive coordinator help with reducing pick 6's from his team's quarterback?
What's a quesion? If you are going to post, post right. Just saying.
And to answer that question, no. No one can. If a QB throws a pick and someone runs it back for a TD, the offense is to blame for allowing the guy to score unless it was obvious that no one would be able to tackle the man.