The Posh manager revealed that the squad and coaching staff had been fully prepared ahead of the game at Hillsborough on Saturday yet the team had once again under-performed on the day.
"We've prepared as if it was the World Cup final this week. I drove to Blackpool and watched Sheffield on Tuesday, prepared for three days solid on how we were going to play," he said.
"So, as staff, we did our part but the players let the club down. I've been sat here I don't know how many times after we've gone behind. Against Coventry we were down 2-0 and came back to 2-2. Cardiff we go 4-0 down and get back to 4-4.
"It seems we have to go behind before we start playing. Well, if you're 2-0 down it is easy to play because there is no pressure on you.
"But it is at 0-0 that you've got to go and earn your corn. That's when it matters, and that's why we're struggling, because people don't have the bottle to go and do it when it is 0-0."