From here: https://en.m.wikipedia.org/wiki/Bathysphere#cite_ref-Gould_2-9
I read about this ages ago, but I've never forgotten the story of the hatch being launched back from the bathysphere with the force of a cannon. Absolute miracle no one was killed when this happened, honestly.
O_O
Dying of the ultra-bends has to be one of the worst possible ways to go (among relatively quick deaths, anyway)