A terrible moral dilemma. Hold a presser to vouch for the man who rescued you at a moment when he could really use the public support? Or stay out of the line of fire from vigilante lunatics bent on exacting “justice for Trayvon�What’s a couple with two small children to do? The Gerstles were expected to hold a press conference today at the office of Zimmerman’s attorney Mark O’Mara, but cancelled a few hours before it was supposed to take place…“The family called because they wanted to address the media. I knew that if we did it in an organized...