well, from exceeding the limit so much, this happened 
That is. Very strange. People have exceeded the bit limit, and while it of course breaks, it hasn't broken that way.
By chance, have you enabled cookies for that site? Twine does... something with cookies when played in-browser and I bet that could be one potential thing that could've gone wrong.
Unless you exceeded the bit limit for more than is a reasonable amount of time and that was the result?