I can't remember when I became aware of the rumours, probaby at the same time I became aware that he was no longer teaching.
I've read Stuart's blog, but I think he is going about things the wrong way (again), i.e. if someone had furnished me with proof about somebody else's rumoured/alleged wrongdoing, I would let the police know about it or encourage the someone to tell the police instead.
It's not something I would publish on a blog, either as an article/entry or in my comments.
I've got a lot of time for Stuart, but his insistence on doing things the wrong way often tries my patience.