I read the Ellerslie thread and was surprised to see people were saying it was NOT a cult. Then I saw the thread was from 2009 and was hoping we can revisit it as they may have developed further in that direction since then. Here are my reasons for saying it is.
1. They teach that it is Satan that punishes us for sin.
2. They teach that is is Satan whose wrath was poured out on Christ on the cross. Both these points can be found in their "Gospel" and "Intercession" videos.
3. They teach that you can be saved and still left in some kind of prison. Found in their gospel video.
4. They have the good old gnostic tendencies which they teach you need their teaching and knowledge to go the full distance of the gospel.
5. They are extreme Keswick, I believe Ludy is a full-blown perfectionist, but either way they teach the traditional possession doctrine of the Keswick's in which you are fundamentally possessed and controlled by Jesus.
6. Promptings/"God told me" to an extreme. I know a lot of people erroneously hold to promptings and it is not necessarily heretical, but coupled with their Keswick "Jesus possesses me" doctrine and to the extreme they take it you get the sense they believe their own internal monologue is GOD's voice.
7. Their are too many theological errors in their videos to really list, they are just all over the place.
The line for a sociological cult is very grey, and very wide. Any thing that distinguishes a cult sociologically when taken in isolation is normally harmless and sometimes even good - you have to look at things cumulatively. My feelings is despite the grey/wide nature of this line they are way past it. If you see a place where individual personalities are diminished in exchange for a group personality that is based on a charismatic leaders personality or teaching it is a cult - I think you definitely have that here.
1. Students are discouraged from talking to one another about theology so they won't be influenced by others set theology.
2. They aren't supposed to read ahead in their materials until their classes.
3. They have a semi-isolated monastic setting
4. Strong submission to leadership who are supposed to have a direct line to GOD through their "spiritual" promptings
5. The belief that they have recovered some missing element in Christianity that allows them to live a higher spiritual life (i.e. Keswick)
6. Spiritual Elitism
7. 3 levels of Doctrinal statements
8. Over the top emotionally manipulative video series.
9. Just lots of small little creepy cultic things you can find on their websites and testimonials about how you will get something from Ellerslie that you can't get elsewhere - i.e. where men go to die and Christ goes to live kind of stuff.
10. Comb through the website and you will find just item after item that is kind of innoculous, but then kind of creepy at the same time.