Since you have driven the car a lot with this condition, another week or so is not going to hurt. You need to remove the rotor/hub assembly from the car to fix. I would check to see if you may need new rotors..rotors are not really expensive and this would be the time to do it.

If you are going to leave the old rotor in and just tighten it, you should remove the rotor entirely to ensure mating surfaces are clean. If you just tighten as is, chances are there will be some debris in there, resulting in distortion of the rotor, and a rotor that will not be perfectly perpendicular to the spindle.

Use high temp. lock tite on bolts.

When I replaced my rotors, I held the hub in a carpenters vice...the type with two wooden surfaces, thus preventing any damage to the rotor.

Good Luck,

Mark

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1984 300TD Wagon, 407,800 mi (current daily driver)
1985 300DT Sedan, 330,000 mi (gone to that great autobahn in the sky)