A long time ago the pool hit some bad luck. There was a similar discussion about how bad luck can never happen unless there are bugs (or block withholding attacks). Entropy decided that since the pool was having bad luck that must mean it is broken and so he left for another pool. He's not carrying any asses, fat or not.

Sometimes bad luck is just bad luck.

Most people can do simple math but have no understanding whatsoever of probability theory. Listen to what Organofcorti is saying. He is one of the very few people on this forum who does understand it.