yes, you should still neutralize the acid. from my understanding, any acid will accelerate corrosion of bare steel (when combined with moisture), but will dissolve rust at an even faster rate, netting you a clean steel layer. i tested this idea once by putting a rusty steel wool pad in OA. the next day, the rust was gone and the pad looked like new. i put it back in the OA and within a couple more days the pad had disintegrated into a fine sediment of steel dust.