Just taking this communication from Trevor at face value, I don't see much genuine contrition, and only a bit of an apology towards the end of his story, almost as an afterthought.
He immediately goes on the offensive, and is both arrogant and dismissive of everyone on the forum, saying,
I did monitor the forum over the last couple of days periodically, but I'm not going to bother with that again.
He gives all the appearance of being the wounded victim here, starting with describing the hate mail he's received. I feel no sympathy for him whatsoever - he's received enough, undeservedly, before the fact. He doesn't even acknowledge that what he did might have hurt people.
I believe he is a congenital liar.