Simon Cowell is on the mend following his back surgery and feels very lucky to have the support of his America’s Got Talent family, a source tells Us Weekly exclusively.“He’s having to miss America’s Got Talent live shows at the moment and just for fun, the production team sent him a giant X and a golden buzzer for while he’s watching,” an insider shared with Us.The producer, 60, broke his back on August 8 while riding an electric bike in Malibu, California.