POLL: Was A.J. Yates the Real 'Brain Surgeon'?

The 'Brain Surgeon', Miami's latest individual serial killer murdered more than three people. One of the suspects for this case was A.J. Yates, Vogel's former patient. Yates had a signature marking carved into the back of his skull, precisely where the 'Brain Surgeon' cuts open his victims. On episode 8.05 "This Little Piggy" Dexter kills Yates with a curtain rod in front of Deb and Vogel. Was Yates the real 'Brain Surgeon', or not? Vote below!