I was thinking the exact same thing, thats one predator-prey interaction that I really hope gets filmed somehow before I die.
A spermwhales life would be a bizarre one thats for sure, they wouldn't just have to hunt these things, they'd have to fight them, all while holding their breath and aquiring the knowledge that these squids could very well overpower and drown them at the bottom of the ocean.
And this has been going on for millions of years, awesome.
Makes me wish they would spend less money on space exploration and more money on earth exploration.