Coaching: Why dont our Corners turn their heads?

I can think of at least two PI calls where the DB did turn his head. One was Kenny Vacarro's PI which was completely bogus. The other, I can't remember which player it was...maybe Dixon?

Yes, it was Dixon. And I can't blame Dixon honestly. 1) He was being as physical with the WR as the WR was being with him. 2) Dixon is a st player first, and a cb second. He probably has a different mindset.