User blog comment:AYET/Additional talks about chapter 699/@comment-4899461-20130224174616

Kuzan is likely just wandering around following his own sense of "Justice", much like Smoker recommended Tashigi should do in Alabasta. It may be that Smoker originally got that advice from Kuzan and just passed it on to Tashigi later. That scenario would make Kuzan's comment of "It's me, Smoker" make a ton of sense. It would reassure Smoker that Kuzan is still following a sense of Justice, even outside the marines.