I saw that ad-hoc connections drain battery in the original-original thread when going for a workaround, so it specifically ifdown's the wifi connection... not sure if that really does the trick.

Now for the important part... I meant to update the wiki page to say it was outdated (considering I'm not even using it now that they've fixed the bug). When gourmand updated it with the PC-connectivity stuff, I mentioned that he should probably update it to mention the bug, but oh well ... I've updated it now.