The Quakers limped out of the competition after a 3-0 defeat to Step 4 side South Shields.
Manager Gray described that performance as the worst in his five-and-a-half years at the Vanarama National League North club.
But Darlo seem to have already put the heavy loss behind them.
Speaking ahead of this afternoon's match at Boston United, the Blackwell Meadows boss has given fans the inside track on training this week.
"The reaction has been fantastic, the players have been fantastic,” he told the Northern Echo.
“We had a conversation with certain individuals on Tuesday night at training, a few home truths were told.
“And the reaction was exactly as I’d expect and that’s got to continue. It’s alright doing it in training.
“We’ve drawn a line under things, now we’ve got to produce some winning performances.
“I’ve watched the game back, but your eyes don’t tell lies, I already knew what was right and wrong.
“There’s always a positive if you look hard enough, and that’s what we want from now on – a positive reaction. That’s got to come on Saturday, because that’s when we’ll be judged.
“One thing I will say for the players is, I know them so well, their pride has been hurt. They’ve been questioned for the first time."