That must be what John meant when he said Yellow tried to kill his friend. Yellow gets that far in connecting the dots, then Arthur gets to eyeball ripping. His thoughts pile up around the roadblock of thrown into the Dreamlands.

Only half paying attention to his own words: "He took from Larson what you gave up. When you proved you cared more about John than your sight. What Larson wasn't willing to part with, even temporarily, even if it meant I wouldn't rot him from the inside out."