MS Word 2011 forces wrong keyboard change
Tom in the comments here was getting to it. Too bad John Korchok was quicker in replying over at the forum. He suggested this:


  That means there is one last thing you can try. Please open Applications>Microsoft Office 2011>Additional Tools>Microsoft Language Register and open Microsoft Language Register. Check that the dropdown is set to English, then OK out and test Word once more.


And I commented on it with this:


  Yep, that was it. Changed Japanese to English, and the keyboard change vanished. But the Phonetic Guide option also vanished… is there any way to have both no keyboard change and the Phonetic Guide? Because if I ever find myself typing Japanese, I might need that phonetic guide… Of course, if that ever happens, I can just reopen the register, but if there was a way of keeping the option even with the register saying English it would be great.


That was 2 secs ago so he hasn't had time to reply to the "would be great" part just yet :).