Well the simple answer is yes. Michael had enough money and connections to fake his death. He was a master of disguise and an entertainer on the level of Houdini. Someone who loved executing grand plans.
No one knows for sure if Michael is alive except Michael himself. We believe he has been sending clues. He has purposefully been seen at certain remote locations and left certain musical and visual clues to tell the fans that he is OK.
Sometimes you just have to get away from it all.