Mark Robins says he is furious about the goal his sides conceded despite City romping to a 3-1 win over Stevenage at the Ricoh.
Marc McNulty and Liam Kelly were both on target for the Sky Blues as they distanced themselves from the play-off chasers in SkyBet League Two.
"That was just what the doctor ordered!", said Robins.
"We did not wait for them to get a foothold. McNulty's opener went straight through their 'keepers hand. I think if he was ours I would have been disappointed but he hit it so well that is was past him before he knew about it.
"We then got a goal from a set-play which was pleasing.
"Inexplicable then we gave them a goal which I am furious about. When you are on top like that you need to keep the ball moving. They were brave and played three strikers so we knew that they are going to run all over us.
"We need to learn. We headed most things away tonight but we need to cut these mistakes out of the game.
"We got a really good goal them from Liam Kelly which he has dragged brilliantly into the far corner and then he has hit the bar with another.
"The sending off affected the game. It does sometimes, but it killed the rhythm but before the game, I would have obviously taken that.
"This three points puts the pressure on everybody else tomorrow."
The Sky Blue Army were in fine form at the Ricoh. Even enjoying a 20 minute rendition of Twist and Shout to keep themselves entertained during a laboured second half.
"The fans have been brilliant from minute one.
"We gave them something to cheer about straight away and they were fantastic.
"That was the noisiest it has been in here for a while."
He added: "The lads are in tomorrow for a recovery session and then they are off on Sunday to make sure that their legs are right. Then back to normal on Monday to get ready for Tuesday.
"We have got to be right for Tuesday."