Update: Some time in the night, the miner just stopped working and now the apollo appears to be dead.
Update 1: After a little bit of a panic session, I reflashed the SD card and all appears to be well. Apparently the power went off sometime in the night here and fragged the filesystem enough to forget about the GPIO pins, so the hardware monitor wasn't starting. Also added it to the UPS.
Yea SD cards dont like hard shutdowns. Always turn off the miner through the shutdown interface. This will be especially important with the Full Node update coming out soon.