It doesn't appear like that resulted in anything from around the times of the freeze-ups, other than the fontconfig and screensavers line showing up after the force-restarts
ETA: It seems like the logs are missing things, actually. Because I toggled usbnetworking on and off several times, status printing in between around 22:15, and none of that is displaying. The freeze-up (after disconnecting from ssh and trying to toggle off in kual) occurred at 22:17 and the reboot process got to the dim backlight with progress bar stage at 22:25, which is when the fontconfig/screensaver lines do show up. Strange that none of the stuff in between is showing