Although a regime change is turning The Hills upside down, critics of the MTV hit remain--including Maroon 5 rocker Adam Levine.
RadarOnline.com witnessed a major meltdown by the singer at Club Deluxe in Los Angeles last night, caught unaware by camera crews and Hills cast members like Brody Jenner, Lo Bosworth and Kristen Cavallari.
"Adam freaked out when he showed to the club and realized that it had become a film shoot for The Hills," an onlooker tells us.
"He lost it and got the promoter to take him around the table they were filming at , covering the camera and telling the crew that if gets put on the show he'll sue!"
Threats of litigation wasn't the only drama!
A random girl approached the star table and tried to pick a fight with Bosworth.
"Security literally dragged her out of the club through the back door," we're told of the offender.
(Photo: PR Photos)