When he got done squaring away the pros and cons, the risks and benefits, the nightmares and dreams, the decision was easy. He thought of centre MikeWebster, who died a mangled shadow living in and out of his truck. He thought of safety Dave Duerson, whococoonedhimself in green sheets and unloaded a.38 handgun into his chest. And he thought of retired Atlanta Falcons safety Ray Easterling, whoshot himselfat his Richmond home in April 2012. Over the past decade, 75 cases…