Ok, apparently I need to reboot this conversation :)
The filesystem is not corrupted (other than what occurs during a forced power off). Many days, it boots and runs just fine for the whole day, when it does have a problem, it's not a boot but rather towards the latter part of the day.
So something is happening that as far as I can tell is not captured in the journal and once it occurs it's not possible to get to a VT or ssh in in order to discover the problem. The picture I posted is more likely the result of whatever is going on so it's not terribly helpful either.