What Happened In Nolan Wells' Missing 90 Minutes?

There are ninety minutes in the Nolan Wells timeline that nobody has ever fully explained, and they sit right at the center of everything. 
Nolan was eighteen, a wide receiver at Southwest Mississippi Community College from Ocean Springs, Mississippi. The timeline itself is mostly machine-logged and undisputed. A boat left a dock outside Ocean Springs at 9:56 on the morning of the Fourth of July. The group reached Horn Island by 11:14. The boat left the island at 4:31 that afternoon, passed Fort Bayou near 5:52, reached a dock at 6:06, and was pulled from the water at a launch by 7:19 before heading o...