As the story went viral and made headlines around the world, Ambor Mercy โ the woman who was holding up the graphic sign โ told the Daily Mail that the public reaction had made her "sad".
"People are making it out to be some crazy sex act when he just put his face in (the woman's) bottom," explained Mercy, who was standing near the DJ booth at the time.
"There was consent from her and she was wearing underwear so it's not like he actually (performed the sex act) on stage. It was just in good Burning Man fun."
She added: "He's a really awesome guy, I wish him the best and I really hope that this doesn't negatively affect him, that would make me really bummed."
Understandably, Flume was the top trending topic on Twitter when the story broke on Tuesday.
"I thought we were getting a new album because Flume was trending but no," one user wrote.
Here's a sample of the other (PG-rated) reactions to the video:
