Whilst your unknown to everyone, why not disclose the name of the club?
I'm not saying he shouldn't -- that's up to him -- but no-one should ever be under the illusion that posting anonymously on these forums guarantees anonymity. I used to run a forum a bit like this with a lot of scope for libel accusations and it is extremely easy to trace 'anonymous' posters. We did it many times.
Personally, if I ran this forum I'd delete all potentially libellous posts and warn off the poster. Too much hassle otherwise. It's different in the US, but in the UK libel is a real issue, even on the Internet and especially in such an influential forum such as this.
QDM