Is this evidence that Alcatraz prisoners survived?

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Those who ran Alcatraz liked to say nobody ever escaped alive. In 1962, inmates Frank Morris and brothers, John and Clarence Anglin, made it off the island but it was presumed that they didn't survive the treacherous waters of San Francisco Bay. Now, John and Clarence's nephew, David Widner, claims to have found a photo from the 1970s suggesting his two uncles survived and fled to Brazil. His story's just been broadcast on American television, and Mr Widner told Rhod Sharp on 5 live that they could still be alive…. This clip is originally from Up All Night on 5 live on Wednesday 14 October 2015