The game looked to be heading for a draw after substitute Luke Varney cancelled out Johnnie Jackson's opener but Jonathon Obika popped up to condemn Leeds to their fourth straight defeat.
But Redfearn said: "I thought the performance and application was good, I thought we were unlucky at the finish because we should have got a couple of decisions,"
"From a performance point of view, I thought we went a goal down against the run of play - we were doing well up to that point.
"Whenever the manager leaves, it's upsetting - these are players that Neil Warnock signed. But they've applied themselves well.
"I thought it was good performance without being spectacular, it was a poor surface. They will be disappointed, but they've been professional at what they've done."