tub won't spin - Frigidaire laundry center

[dudesir]

Occasionally the tub on my Frigidaire laundry center (about 4 years old) will stop spinning. Generally disconnecting the ground wire to the motor and reconnecting it will fix the problem but that's not working this time. The tub and the motor spin freely by hand so nothing appears to be burnt out. The control module clicks when I try to run the spin cycle in diagnostic mode telling me the module is probably fine. Any ideas regarding what's wrong here? 

 

[16345Ed]

You won’t get much help without a model number.