"We had a blatant penalty and he bottled it," he said.
"If it's not a level playing field and, if we don't get the decisions, blatant, important decisions then what is the point of turning up?"
"I thought Mike McCurry had the balls to stand up and give these decisions," Levein said.
"We get a perfectly good goal chalked off and a blatant penalty, with not even a decision to make, and it should've been a sending off."
SFA chief executive Gordon Smith hit out at Levein's comments, but United director Derek Robertson later said McCurry's performance reinforced the view that referees are biased towards the Old Firm.
The debate was provoked further when SFA president George Peat described Levein's accusations against McCurry as "criminal" and United responded by saying they would seek legal advice over what they perceived to be prejudicial comments.
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