After getting a comment from the creator of kanata (an awesome piece of software by the way) that he found my story amusing, I figured that I'd also post it here, partly as fun, partly as a cautionary tale. Also, I'd appreciate any tips as to what to check for in my system, it's a weird feeling to know that some stuff might have been messed up under the hood.
I find yanking power cables tends to pretty reliably power cycle a device.
I mean, yeah, it can also make your storage a bit upset, but rarely in a major way and if you are not in control of your machine that's still the lesser evil, potentially. Especially if you back up your data.
Laptop, so it's a bit harder to pull the power cable. The default power button behavior is to hibernate, which usually finishes shutting down before a hard shutdown can trigger and doesn't fix that.
Fair enough. In my mind I was all "pull the battery", and then I remembered I'm old and it's not 15 years ago. I guess at that point you're stuck holding the button for however long it takes to force a hard shutdown in your system.