Colin Todd cursed a lack of professionalism after City tossed away a first home win of 2006.
Todd accused his players of switching off once Dean Windass had netted his 16th goal of the campaign.
And they paid the price by conceding a last-minute equaliser when Swindon defender Sean O'Hanlon headed home from a corner. Todd said: "I'm sure if the score had been 0-0 we would have been professional and not conceded a goal in the manner we have done. But because we got our noses in front, people didn't do their jobs correctly.
"We left two men upfield for their corner which we never do. It was totally unprofessional in doing that.
"So instead of winning a game 1-0, which we deserved to do, we've dropped two points and that's a big disappointment."
City's fourth home draw on the trot means they are still five points off the drop zone ahead of tomorrow's trip to promotion-chasing Swansea.
But Todd still believes there is no need for
genuine concern, even with Windass approaching his marathon ban after the next two games.
"We've only been beaten twice in nine games but we lost that one at Colchester and everybody's been on the back foot," he said. "It's not the case with the players but there's been a little bit of anxiety around the club and there's no
reason why that should be.
"I've never known a league table like it. There's a lot of teams now looking at sixth spot only but there are a lot looking over their shoulders as well.
"Saturday feels a bit like a defeat but we'll dust ourselves down and go to Swansea in good heart and determined to get something from the game."
Defender Lewis Emanuel is a doubt with an eye injury which forced him to quit the action at half-time. Meanwhile, Steve Schumacher will miss Saturday's home game with Bristol City after receiving his fifth yellow card of the season.
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