How to remove heavily torqued wire cup? Was placing a wire cup on grinder and started grinder before cup was snug . Cup is now torqued onto grinder. Attempted to remove by locking the shaft using the button on the gear box and applying wrench to the hex nut on the top of the wire cup, twisting in the removal direction; applied enough torque to cause shaft to spin with lock button engaged. Removal failed. Applied Liquid Wrench to cup threads, will wait until morning to re-attempt removal. Halp plz!