Barnet breathed life into the relegation battle with a 4-1 win at the Pirelli Stadium which left both Burton Albion and Northampton Town looking nervously over their shoulders ahead of their meeting on Tuesday night.
"There was nothing positive to take out of it – we were all over the place," said Peschisolido who, like his Cobblers counterpart Gary Johnson now needs to lift his side for a crucial clash.
"What I do about it will be between myself and the players," he added.
"They know that's not good enough and we'll have to work on making sure that Tuesday's much better.
"The only positive is that we have another game on tomorrow to rectify it."