if you have to ride the brakes alot(like in traffic) dont ever plan on touching the rims or rotors.....friction creates heat with will decapitate outwards from the source.....
Jack the rear end and spin the wheels.
Since both are dragging - i would suspect the parking brake cable is binding. As you work the handle up and down do the levers move on the calipers?
You can disconnect the parking brake cables from the calipers until you fix it. Keep wheel chocks with you in case you have to park on a hill...
Not usually a stickler for grammar or english, as mine communication skills suck. But "decapitate" means to remove one's head from one's body. lol, sorry.
LMFAO!! Good call!