When someone sends you a link like this it's always worth making a couple of basic checks.
The facts are:-
The man was not the orchestra's conductor, he was a troubled individual, known to the Police.
The incident occurred in 2011.
Whoever your former forum member informant is, he/she isn't a reliable source of information, and obviously has an agenda of his/her own. I'm not going to provide this person with the oxygen of any further publicity.