OK, I got the rotors off. And from what I can gather, I believe this was a main brake system failure. The calipers are in very bad shape and show signs of high temps. The E-brakes don't look that bad. I can actually still see rust on parts of the e-brake pads, which would have easily be worn off if they were engaged against the rotor. Here are some pics of the calipers and e-brakes.
I am replacing pretty much everything, pads, rotors, MC, and calipers.