It appears the adjuster cable is too long (11" cable on 10" brakes?). That cable should be tight. The outer bearing cavity should be dry (it's just a dust seal).Oh boy. There's a couple problems there. The self adjuster lever is in the wrong spot, and there's no tension on the self adjuster cable. Looks like the outer axle seals are bad, maybe the bearings are worn, and the oil/grease has made it to the brake shoes. You need new shoes and check the star wheel to see if it's seized. Is there excessive play in the axle bearings? I've had that when I over packed the axle bearings once, the grease heats up and forces past the outer seal.
Mike