In truth, the Blades were lacklustre but they were not helped by a hamstring injury to Chris Basham, and they were denied what looked like a late penalty and a red card when Alphonse Areola challenged substitute Jayden Bogle.
Wilder said he was relieved Bogle was able to walk onto the bus after a “reckless” challenge.
“That is a ridiculous decision,” he fumed. “Anywhere on the pitch that's a red card.
"Whether it's brave, committed or desire, it's reckless. You can't tell me that's not out of control.
"Jayden's had a couple of injuries this week which have set him back.”
His team are 14 points from safety with only 13 matches to play.
“We've got to do so much,” acknowledged Wilder. “We'll keep going, keep fighting.
"They've got to keep going right to the end. We've got an obligation and commitment to our fellow supporters but I'm not going to mug everybody off and say we've got a a great chance (of staying up).
"Out of 14 games we've got to win eight.”
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