In late May, the biggest rock tour in history hit a speed bump: Bono underwent emergency back surgery in Munich for a compressed sciatic nerve that forced U2 to postpone the summer leg of their mammoth 360° Tour and cancel their headlining spot at Glastonbury. After nearly two months, the band has broken its silence in a homemade video shot by drummer Larry Mullen Jr., in which all four bandmembers give fans the good news: Bono is healthy, the band is in the studio, and U2 will be back in American stadiums in the summer of 2011.