wow!
it sounds like you have some bad calipers back there, I would replace them for sure! inspect the rotors, and verify they are ok before you re use them, new ones are not expensive. don't bother getting them turned if they are scored.
I don't know the back end of the sedan very well, I could jack up the parts car I have and take some pictures for you, but I am sure someone here has better suggestions. surely to pete, there is a member or two in the L.A. Area willing to give you a hand... I would be happy to if you were about 3000 miles closer.
John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!