Greetings. I have identified the problem, and released version 2.66 of the dual wield plugin with the implemented fix. The updated version is available for download on the project page now.
Sorry for the inconvenience, and thanks for reporting this bug so it could be squashed. Never feel like you're bothering me (even when I say I'm at work), when reporting even the simplest of glitches like this one.
-Ramza