"I am shell-shocked and I feel for the fans - the players are just as shell-shocked," said Dave Jones. "They didn't see that coming. I have never been involved in a game like that.
"One or two players thought they would do it their way. They are wrong.
"It's a mental thing. Too many switched off and too many felt there was another way.
"I have never been involved in a match where my team was in such a dominant position and then not performed to the levels they are capable of.
"The players were told they had to continue doing things the right way, but it seems they felt there was another way and it all comes down to mentality.
"We should have won both games against Plymouth and Peterborough but have ended up with only one point.
"The players have been told in no uncertain terms that is not good enough and they will continue to be told again and again."
Peterborough boss Mark Cooper wasn't happy either.
"Our first-half performance was completely unacceptable.
"We didn't get close to Cardiff, we didn't tackle, we didn't head and to be quite honest, we didn't do anything.
"If you don't want to compete, you won't win a football match - whether it is in the local park or the Premier League."
But he played down talk of an inspirational team-talk to inspire the fightback, and revealed: "I didn't say a lot to the players at half-time - in fact, I thought about getting in my car and going home!
"But we changed our shape, changed our personnel and got ourselves back into the game.
"Cardiff probably thought it would be a stroll but we ended up getting a point, but I am still really frustrated that it took us until the second half to start playing.
"If we are capable of scoring four goals against a team chasing promotion in the space of 45 minutes, what could we do if we performed for a whole game?"