The Blades came from a goal down at half time to earn a draw, keeping themselves in the League One playoff places.
Speaking after the match, the manager said: "It was a game of two halves. We never got a grip of it in the first half and quite honestly we looked anxious and didn't handle the pitch well, and allowed them too much space.
"There were one or two choice words at half time because I was very angry with that performance.
"A point is better than none and we must be grateful for small mercies. I think it was a fair result in the end."
Sheffield United are fifth in the league table, six points outside the automatic promotion places.