I know this is a very old thread, but better late than never. I was able to fully "undo" the almost frozen lower bearing by turning it upside down, putting food grade silicon SPRAY oil in the cup above the bearing. I let it set for a hour then put the motor on slow speed and ran it upside down with the oil in the cup. It is fully free and loose, but not damaged. I will continue to lubricate this with the spray. Best of success to you all!