This is a somewhat depressing story, I don't have the full details but going on what's in this report the guy was sacked for believing that pyschics should be used to investigate crime. Fine by me, believe what you want; but if you try and follow through on that then expect to get sacked, psychic evidence is not permissible in court and should not be used as a resource.
If the guy was sacked for merely stating his opinion that psychics should be used then he's being persecuted, he's an idiot for suggesting it but he's allowed to voice such an opinion. If he tried to use or pushed for psychics to be used then its another matter.
What's more irritating is this, again it's a case of not know enough: either the police force were (hopefully) following up the tip to reassure the family and on the off chance that a real tip was being obscured as pschic, or they actually wasted time and money on a psychic tip off. That being said it should have been obvious after finding no petrol in the guy that the tip off was rubbish