Stuart Gray urged his side to play to the whistle following the 1-1 draw with Fulham on Saturday.
Stevie May’s opener was cancelled out by Matt Smith who stabbed home immediately after the visitors were denied a penalty.
Marnick Vermijl tangled with Ryan Tunnicliffe but the referee waved play on and Fulham took full advantage.
Gray said: “You’re taught from a very early age that you play to the whistle.
“We thought their lad went down too easily and if that was the case we thought the referee could have pulled it back and given us a free kick for simulation.
“I think we were distracted and their lad put the ball in.
“I’m disappointed because we should have won the game and I’m talking here about one point when it should have been all three.
“But it wasn’t a game for the purists and the only real positive was the fact that we have reached 50 points.”