Yeah it's so damn annoying . Funnily enough, I replaced my 02 sensors with new ones, no difference to steering! Hahaha.
It's definitely electrical. I'm thinking grounding/voltage issue causing solenoid to go spastic. The 4WD relay in the boot clicks as well, lights dim (big current draw). Fricken R32s. With the HICAS computer plugged in, it's horrible to drive.