There are a lot of things John Tenney says and I rarely re-post them, I know I should but then people would say I’m taking sides.
As I am always telling others, Demons are not going to go away because you (or a priest) shouts judo-christian words at them. I agree with john that people who go around calling themselves “Demonologists” do not nor care to understand what true demons are.
Make sure to check out his posting on his Weird Lectures website.
Click on the link to the right that is titled Demons, there are quite a few interesting tidbits there.