Nope! I see both ini and ini.bak, and I've edited ini.
Wait a second, it's not editing itself back, it's adding an entirely new duplicate of the code as it was originally on top of the already existing code. It's 42,000 lines long now, and just repeats itself like 10 times over. I was wondering why there were so many hits when I search for "fullscreen" but it seems that only the top one matters.