The rocker's apology comes after saying he was "fed up of seeing poor Britney Spears [dancing] on YouTube."
The legendary singer glittered in a silver gown as she delivered her first performance since announcing her diagnosis of stiff-person syndrome.
During this Disability Pride Month, one expert is calling for more accessibility at live music events.
"At that time, the band had broken up, and I was told they would never reunite. But that’s not what happened."