St Mirren were reduced to 10 men after 70 minutes when FrancoMiranda received a straight red card after the assistant referee signalled he had used an elbow jostling with Sutton at a throw-in.
McGinn, who scored in this month's draw with Celtic, had been restored to the St Mirren side along with Alan Reid, John Potter, Stewart Kean and FrancoMiranda following the 0-0 draw with Kilmarnock.