Sounds like he must have tried to get back on the train after being denied re-boarding:
http://www.democratandchronicle.com/article/20120222/NEWS01/302220022/Amtrak-fatality-Rochester-train-tracks?odyssey=tab|topnews|text|Home
http://www.democratandchronicle.com/article/20120222/NEWS01/302220022/Amtrak-fatality-Rochester-train-tracks?odyssey=tab|topnews|text|Home