David, good luck with contacting Mr Clarkson, I hope he can shed some light on your question. I’m sorry to hear that some Christians have called you a friend of Satan, to be honest my own experience of Christians hasn’t been great either as a late entrant into Christianity. I have been accused of attempting to get power over other Christians in the congregation which is quite laughable, I was guilty of practising reiki healing and complementary therapies. But I have decided to forgive and move on, although I am not a very good Christian myself so I try not to preach to others. Sorry if I digress from your topic. Curses seem quite universal in magic and religion, and the Apostles, namely Peter and Paul in The New Testament directed curses against people and of course Jesus cursed the fig tree.