Stooner: it is something that, i think, could happen with more than one at the same time...
That's what I was trying to find out.
It wasn't a "what's in my pocket" question, more like those
puzzles where lack of information is actually crucial information, like #13 here. How could anyone on GOG know for sure what exactly happened to me, so that I even put a special provision for it in the initial post? Most likely if the same happened to them, on GOG (though adambiser almost guessed).
Since the forum didn't turn into DESU DESU DESU, I figured out that either no one else got the glitch - or someone did, but they were keeping silence, in which case $100 would be a good motivator to break it. And the post could be disguised among a number of other suggestions of improbable occurrences.