Shuffle for the Cure The Walking Dead AMC, Sundays, 9/10 PM “Bloodletting” Written by Glen Mazzara Directed by Ernest Dickerson “Mankind’s been fighting plagues from the start. We get our behinds kicked for a while, and then we bounce back. It’s nature correcting itself, restoring some balance.” —Hershel Green The first episode of the new season of The Walking Dead was written by the guy who invented the premise, comic book writer Robert Kirkman. This one is written by new showrunner Glen Mazzara, who climbed into the captain’s chair after creator Frank Darabont was fired last year. Under new management, this show…