DeMerit will now be facing a rap from Watford boss Adrian Boothroyd, for his comments.
DeMerit said: “Time and again this season it has been individual errors that have killed us. We can’t expect to stay in this league if we perform like that.
“We definitely did enough to win against Charlton but two fundamental errors in the marking cost us. If we keep doing that there is no way we can stay up.”