Complete brake failure?

It did not pull one way or the other enough to notice, the ABS light would pop on for a second or two every now and again but would turn right off and ever since the brakes failed the ABS and the brake light have not been on either at acc or motor running.
I removed the master and bench bled it; the old fluid was so dark it was almost like soda. But I did that put the master back on, bled everything thoroughly and used 2 cans of dot 3 to make sure the old was flushed. The piston wasn't binding, it was actually the opposite. It felt too easy to move. No smells, no burning brakes.
As far as brake work, I always do my own brakes, every oil change I pull them, clean them and regreased them. I've done this ever since my first car. But the last time I actually changed a caliper/pads/rotor was last winter.
Also, this is going to make you shake your head. I know it made me do a double take when I got the car. I've attached a picture of the ABS module. I have not had my rear left (drum) brake since I was given this car last February. It is pinched off at the valve. No air or issues with the line or any braking problems with that anyway. Long list of things that need fixed and it's my only car. Thank you for your help in my situation. My family's livelihood depends on this vehicle, I appreciate what you guys do.

Here's the ABS.