Beheading planned in Saudi sorcery case

This news article made me laugh, how dumb can some people be? A guy in Saudi Arabia had a television show where people called in and he predicted their future. Then the religious police of Saudi Arabia arrested him for SORCERY! They think he's a sorcerer, and he has magical powers. The jury actually found him guilty of sercery and sentenced him to death, by beheading I guess. First of all if you thought someone was an actual sorcerer and could tell the future, wouldn't you want to keep him alive to TELL YOU THE FUTURE? Also if you thought he actually was a sorcerer with magical powers, why would you want to upset him by arresting him, and sentencing him to death? If he actually had powers, and that's what they think, couldn't he cast a spell on you, and make you go insane and kill everyone that was involved in arresting him. Or couldn't he just teleport out of the jail cell?