T-Mobile CEO John Legere reportedly crashed AT&T’s CES party at the Rain nightclub in Las Vegas last night, only to promptly get the boot.

The CEO, whose appearance was witnessed by CNet’s Roger Cheng, who tweeted a photo, showed up for the hip-hop star Macklemore’s private concert to the geeky crowd. But AT&T representatives didn’t want him there.

A security guard tells Geekwire’s Todd Bishop that Legere was allegedly “harassing” party attendees, and AT&T representatives wanted him out.

“All of a sudden these gigantic goons said ‘Can I talk to you over here,’ ” Legere explained to a reporter, and that he was then escorted from the nightclub.

But Legere, whose T-Mobile just inked a 3.3 billion dollar deal to buy wireless spectrum from Verizon, tells Re/code the real reason for his surprise appearance.

“I just wanted to hear Macklemore.”