I still see your posts, including your newest post, on the other site. Whether or not anyone from Viet Nam can see it, I don't know. With .htaccess, you're blocking them from your site, not his -- but they're still viewing your content on his site. He's pulling a live copy of your blog, which I assume he's doing with your RSS or Atom feed. Did you try renaming the feeds to see what happens?
Try making a change on your
BBW blog to something that wouldn't be carried by the feed, such as a banner or anything in the sidebar and see if that change appears on the bad site.