Why are you showing pms?
he always does
if you try and work something out with him via PM he tries to publicly humiliate you for it or something
if you do it in the boards then people yell at you for stirring up drama
if you make a drama on him then people will yell at you for making a pointless drama because there have been like 50 in the past
if you do any of the above people yell at you for "taking the bait"
the compromise is to just stay the forget out of his way