How did trying to turn the heat down turn you into a giant squid thing?

[Seriously, how could someone screw up that badly? Though, if anything, it made Kazuya worried. If Hiro managed to mutilate himself like that when performing something so trivial, could Kazuya do the same? Could he turn into a Belberith meatball from hell? God, he hoped not. Hopefully this just a human-alien thing, rather than a human-demon thing]

You know what, never mind. I don't really want to know. So... [he tilted his head] You stuck like that forever, then?