The Buffalo News version of events is... odd. No one's sure if this guy was drunk yet? (At least, they don't have a quote from a witness to that effect, just that he had been ejected for violating the Fan Code of Conduct, which I'm sure is broadly written enough to be of little use in identifying what he did without specific testimony.) And this creek is at the bottom of a steep cliff? (Preliminary reports say no physical trauma, though.) And apparently he and a girl had just broken up a couple weeks ago and was making cryptic statements about it? (That could be a lot of things, though.) He could have been drunk and fallen, or this could be about something else entirely that has little to do with stadium security.
Look, man, I know a lot about whatever it is you're talking about.