Click on "User CP" at the upper right hand side of the screen. There should be a "List Subscriptions" option somewhere about halfway down the right side of the screen. Click on that and there should be an option to unsubscribe from any of your subscribed threads.
He made this comment, "...that doesn't apply to you, Chico, you're a professional sharpener and you've been knocked around a few times..."
Interesting comment, and one I agree with. Not because I know you, but because I know that a truly sharp knife in the hands of someone who has a reasonable idea how to use it can be a formidable weapon.