Well, I'm having exactly the same problem as described here Windows adding additional keyboard languages by itself except in my case it's Russian and Japanese, and I'm using Japanese keyboard to write english (which is absolutely possible, even in CMD, so I have no need of english layout). However, once in a while, English comes back - but not in the Input languages list! Here's the example of what it happens: http://postimg.org/image/h6gkndfkl/ - as you see, there is no English in the input language list, so I cannot remove it! But it is in the list of languages that I will switch between if I try to.
A solution for this problem is to open Input Languages, add English, Apply, remove English, Apply. But this requires manual operation which I do not want to be doing, because, well, I'm not a servant of my PC. And it's obvious Microsoft does not care about bugs with it's sytem and won't fix them either (way to promote paying for software, btw).
So, I'm looking for an automated way to fix this.
A brute way would be to use a macro that does all the actions required, but I think there must be a better way. Windows must store the list of these languages somewhere, mustn't it?
I know the list of languages that appear on the "Input Languages" window is stored at HKEY_CURRENT_USER\Keyboard Layout\Preload but it seems that this isn't directly related to the list of languages that the system switches between when you press your "switch language" hotkey. There must be something else.
Does anybody have any ideas on where to look?