On August 5, 2009, while on the Guitar Hero Aerosmith Tour, Tyler fell off a stage near Sturgis, South Dakota, injuring his head and neck and breaking his shoulder.He was airlifted to Rapid City Regional Hospital.Aerosmith was forced to cancel the rest of their 2009 tour, except for two shows in Hawaii in October. Back in 2007, Aerosmith had to cancel their first concert in Maui, which resulted in aclass action lawsuit involving 8,000 plaintiffs. Attendees received tickets and, in some cases, reimbursements for out of pocket expenses. The band also performed in early November at an auto race in Abu Dhabi.
On November 9, 2009, it was reported that Steven Tyler had no contact with the other members of Aerosmith and that they were unsure if he was still in the band. On November 10, 2009, Joe Perry confirmed that Steven Tyler had quit Aerosmith to pursue a solo career and was unsure whether the move was indefinite. No replacement was announced. Despite rumors of leaving the band, and notwithstanding Perry’s comment as reported earlier the same day, Tyler joined The Joe Perry Project onstage November 10, 2009, at the Fillmore New York at Irving Plaza and performed „Walk This Way.” According to sources at the event, Tyler assured the crowd that despite rumors to the contrary, he is „not quitting Aerosmith.”On December 22, 2009, Rolling Stone reported that Tyler had checked into rehab for pain management.