EASER I, too, had used Delocalizer (simply my preferred program; no doubt the others also work well). Saved me over 1 GB of space. And as I noted in an earlier posting, I followed the instructions for how to get the updater to work on my modified Office. And the update did work. However, I also have a personal practice of setting some applications to hide when I'm not using them. Oddly, Excel kept crashing on me when I tried to do this. I eventually had to reinstall and go through the entire update-by-update procedure (i.e.,12.1.0 to 12.1.1 to 12.1.2, etc.). I'm now again up to 12.14, only this version has all the unnecessary languages in it. But Excel no longer crashes when I hide it. I'm hard-pressed to explain this, but I guess I'm stuck with the bloated version.
(Version 12.1.4)