Scorpilot
I think that Airbus are aware of the contradiction - My operator has just given us an Airbus Temporary Revision (TR168) that states:
If during taxi the amber "NW STRG DISC" memo is displayed along with the WHEEL N.W. STEER FAULT, or with the WHEEL N/W STRG FAULT, the flight crew may attempt to perform only one BSCU reset. The aircraft can be dispatched if the above-mentioned ECAM caution and memo are no longer displayed after this BSCU reset.