Chuckles, I'd assume your best bet for getting an answer to your question is to send Metro a PM describing the glitch and the workaround. I noticed that your post hadn't been addressed -- I probably should have mentioned something. In any event, I assume Metro would have to make a ruling as to whether a situation is a bonafide glitch, then decide whether talking about the workaround is, in fact, discussing strategy.
As for me, I just went back to the last save (with Metro's blessing) and so far the Roomies haven't started another fire. If they do, I'm tempted to just let 'em burn. It'll serve them right for trying to sabotage my Challenge!