The famous Pink Floyd pig, which nowadays can only be seen live on Roger Waters gigs, has mysteriously disappeared at Coachella on Sunday (April 27). The giant inflatable pig, part of Pink Floyd’s stage show since their 1977 iconic LP “Animals,” simply broke free from its tethers above the Coachella crowd and drifted off. Organisers are offering a $10,000 reward and four festival tickets for life in exchange for Waters’ signature pig, which was seen…