train, he doesn't remember a thing but he has been released from the hospital, right? >> reporter: that's right, carol. authorities say they hope that bostain will be able to provide them with clues, and his lawyer says he doesn't remember everything that happened that fateful evening. take a look at what his lawyer had to say to abc's "good morning america." >> he has no recollection of the events and i am told his memory is likely to return as the concussion symptoms subside. >> he spent six hours with the police and what did he tell them? >> everything he knew. cooperated fully. >> what does he know? what is the last thing he remembered? >> he remembers come into the curve. he remembers attempting to