I heard this happened while Simon God was playing new material from the 3rd Hallucinogen album! The first track he played caused a grade 6.04 earthquake in the Richter scale! The second track brought in winds reaching 60.4 m/s! By the time of the 3rd track the air turned pitch black with whinging creatures all around. It's thought to be a quantum anomaly of somekind. When things returned normal the stage was down. There are reports coming in of Posford floating over London