Simon Cowell returns home one week after breaking his back in an electric bike accident

People

"He's been doing some work already this week but he also knows he needs to give his back time to heal properly from the surgery," a friend of Cowell's tells People magazine, adding that "he's been able to walk quite a lot and quicker than the experts had expected him to do after this type of major surgery, which is a great sign for the healing coming along well." ALSO: America's Got Talent's production team sent Cowell a giant X and a golden buzzer for while he’s watching at home.