I've been avoiding this thread since I was in an HBO deprived zone all week but finally has a chance to watch.
That was definitely one of his drug induced flashback, he had them before while driving, he probably has them all the time. I'm not even certain the voice he heard was the scared man or his own, young preacher?? This episode needs a few viewings, inbreeding really dirty sex, sloth from 7even in the garage, house of hoarding horrors, creepy dolls, animal abuse, English/Southern accent scared faced psychopath, southern gothic voodoo, Druid catacombs, visions of beloved from the other side, reading stars, light and darkness, so much to take in I don't know where to begin but it all means something.