As a mod over at the forum that Doesnt linked to, I can assure you it works as he described. Basically, he just sat down and analyzed the JP split that was posted in this and applied the same logic to an English ROM. Its not a straight hex copy either, which was the problem with the first patch from over a year ago.
He would have just posted it here, but post count limits don't let him link to other sites or to attach files so he really couldn't. I'll ask him if he wants me to post it for him.