LOS ANGELES, CA - FEBRUARY 12:  (EXCLUSIVE COVERAGE) Bruce Springsteen and Sir Paul McCartney backstage at The 54th Annual GR
Kevin Mazur

Bruce Springsteen is notorious for not wanting to leave the stage, frequently clocking in shows past the three-hour mark. At last night's UK festival Hard Rock Calling, though, Springsteen and guest Paul McCartney were silenced by festival organizers, who pulled the plug on the duo after they performed "I Saw Her Standing There" and "Twist and Shout."

While trying to speak to the audience, the two rock legends didn't realize they broke the venue's sound curfew, causing a bemused crowd to wonder why Macca and the Boss's mics had been cut off.

Live Nation, the festival's promoters, defended the decision, writing on the festival website, "It was unfortunate that the three hour plus performance by Bruce Springsteen was stopped right at the very end but the curfew is laid down by the authorities in the interest of the public’s health and safety. Road closures around Hard Park are put in place at specific times to make sure everyone can exit the area in a safety.’’

One person who wasn't buying it, though, was outspoken E Street Band member Steven Van Zandt, who went on a Twitter tirade after the show:

One of the great gigs ever in my opinion. But seriously, when did England become a police state?
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

One of the great gigs ever in my opinion. But seriously, when did England become a police state?
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

We break curfews in every country but only English cops needs to "punish us" by not letting us leave until the entire crowd goes.
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

We break curfews in every country but only English cops needs to "punish us" by not letting us leave until the entire crowd goes.
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

I'm sorry but I have to be honest I'm pissed. Like I said, it didn't ruin the great night. But when I'm jamming with McCartney don't bug me!
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

I'm sorry but I have to be honest I'm pissed. Like I said, it didn't ruin the great night. But when I'm jamming with McCartney don't bug me!
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

If it's a public transport issue I'm sorry but people are adult enough to go get a train if they need to without the cops pulling the plug!
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

If it's a public transport issue I'm sorry but people are adult enough to go get a train if they need to without the cops pulling the plug!
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

Little Stevie seemed to have calmed down this morning, clarifying that his beef wasn't with Live Nation or Hard Rock Calling, but with the UK government:

There's no grudges to be held. Just feel bad for our great fans. Hard Rock is cool. Live Nation is cool. It's some City Council stupid rule.
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

There's no grudges to be held. Just feel bad for our great fans. Hard Rock is cool. Live Nation is cool. It's some City Council stupid rule.
Jul 15 via UberSocial for iPhone Favorite Retweet Reply

To not hear Sir Paul and Bruce speak to the crowd, check out the video below beginning at 10:30: