When asked if the result had dented the side's promotion hopes, Clark blasted: "Of course it hasn't. The situation has not changed. Colchester were three points ahead of us in sixth place before kick-off and after the day's results that is still the case.
"I still believe in my players. But it was the first time at home where we haven't started well. There was no pace or intensity. Maybe it was just a bad day at the office.
"I thought the players looked nervous throughout the game and that there might have been a fear factor for them in playing such a crucial game at home. I don't understand where that comes from. Playing in front of a big crowd in a beautiful stadium is what footballers should live for.
"I can't get my head around how a player might prefer to play in front of two or three thousand in a game where there's nothing at stake."