Laws said : "We are very disappointed, more so with the sending off and the goal when our players stopped expecting the referee to award a foul.
"Credit to Darlington, they tightened things up but there were a lot of pluses and we are made of stern stuff.
"The turning point was the sending off, but the players had a good go and we are not going to panic, decisions did not go our way, but we have to take these things on the chin.
"Commitment and effort are there, but our goal scoring touch has deserted us at the moment, but it will return."
Quakers boss Dave Hodgson was delighted to end United's unbeaten run, but had sympathy for the red-carded Butler.
He said: "We did well, especially in the second half and we could have wrapped it up more convincingly in what were horrendous conditions.
"This showed our fitness levels and ability. I would have been very unhappy if one of my players had been sent off for an offence similar to that of the Scunthorpe player but I have no complaints over the dismissal of Brian Close."