Guitarist Richie Sambora tells us that Grammy organizers approached Bon Jovi about the performance after having denied the group the chance to play a couple of years ago: "They really actually came after us you know, we're really really getting ready for this tour. And I think it was like when we won the Grammy a couple of years ago with 'Who Says You Can't Go Home', we wanted to play and they didn't kind of let us play. This was kind of a respect situation when they came back and said, 'We're gonna give you six and a half minutes and guys could do what you want.'"
The rest of the 610 CKTB article is here.
EDIT: I worked out where I'd seen this before... the conference call that Richie and Tico gave after their Grammys performance. ;)