My GE machine dumps water into the tub during the final spin too but it stops after about a minute or two into the cycle which I suspect is the normal operating condition of this machine to flush out any remaining rinse water from the bottom of the tub, In your case it could be a bad pressure switch or one that is not properly calibrated. Disconnect the hose and blow into it a few times (not too hard) and you should hear a clicking sound from the water level switch on the panel, Re-attach hose and run the spin cycle for at least a minute then reset the water level switch (that's the direction given on my GE machine service sheet). You may also need to clean out the air dome that the hose to the pressure switch is connected to which could be sending a false signal to the pressure switch. Worse case would be to turn off the water valve to the machine and let it spin until your clothing is dry.