Manager Chris Wilder pulled no punches as he delivered an honest and frank assessment of Oxford's inability to kill games following their 3-2 defeat to Macclesfield.
The Us took the lead through James Constable before Tom Craddock doubled that advantage in first-half injury-time.
However, Paul Bolland fired home, Matty Hamshaw levelled and Bolland's second of the game sealed the comeback win.
He said: "The game should have been dead and buried at half-time. We should have been five up, and I mean at least five up, and that's without all our chances going in.
"Perhaps I should have spoken louder in the dressing room, or rather picked players who will listen to me, because in the second half we simply weren't at it. I told them at the break that we needed to play in their half for the first five or 10 minutes, but we got crucified.
"They were first to the breakdown, our central defenders got bullied off the ball and our back four were run ragged. The midfield didn't get a foot in and couldn't string a pass together. We allowed them to heap ball after ball on top of us."