I assume at this point Boren is trying to spin the story so as not to create hysteria at the university itself. Unfortunately, his flip-flopping is creating more controversy than if he was just upfront and said something like "we aren't sure".
He should have said "we are not sure and will provide more details when they are availble." That would have been the smart thing to do IMHO. This spin about the kid being depressed that is being disputed by his fraternity is not selling.