Rotor was seized in the housing pulled it out with pliers. The blue. Housing had heated up and smeared around the moter and the bore. Can I simply use sand paper to smooth out the bore and replace the rotor?
Worth a try to smooth out the bore and put in a new rotor. If you have a double drawer take the rotor out of the other drawer and put it in the damaged one to see if it works before going to buy a new rotor. If it doesn't work then you would have to buy a whole new tub and swap motor heating plate etc over. May not be worth it. Tubs and rotors are fairly expensive.
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