Matt Potratz was 27 when his family gathered at his hospital bed and were told to consider turning the machines off. He had already died on the way to hospital and been resuscitated, but tests at hospital revealed no brain activity . "They said I was brain dead. My dad asked for a second opinion . He says, 'If Matt were in my shoes, he would not give up on me this soon'," Matt said. Matt, now 44, had been buried under an Idaho avalanche, which flung him down a mountain and crushed him into a