Rubbish,
If the box (5GC if I remember rightly) goes U/S, Hydraulic pressure is ported to the servo valve and equally to the actuators.
The switch in the flight deck 'A/skid NWS off' is a soft reset/inhibition for the BSCU hence you get no BSCU functions (Steering inputs or Anti skid).
Therefore you always need the pin in and the towing lever to Tow to prevent over stressing the actuators, a plethora of subsequent inspections are required, including strip down of the actuators if the box fails under tow. Makes sense that in total electrical failure the wheels are centred by hydraulic lock when compressed.
If is there is a short caused by moisture ingress a NWS Fault will present itself on ECAM regardless of tow lever position. No dispatch
The only way of not allowing hyd px to the servo valve on classic aircraft is dropping the NLG Doors. As they were on the Green system door up return line.