I think you misunderstood which attacks I'm talking about. When I said spitting attack, I meant the one that he uses for his corner lockdown, (2D I think it is) not his distortion drive (which would be pretty useless against haku as an anti-air). His j.3D has a bit of range on it, but nothign crazy.
As for his j.214214D, the move extends out from directly under arakune, essentially shielding him, though the bugs only come out if it hits.