I think that ritual forces you to ponder an issue so even the Exorcism portion is just focused problem solving.

So this person is acting weird.

Is someone drugging them or have they developed mental illness type of thing but like people that are sleep deprived if you do not know what you are looking at you have no idea what it is.

The solution to the already did Aethyrs and Book of Lies is Book of Enoch.

I am excited.

Enoch replaces Uriel with Phanuel and has an Exorcism ritual.

Golden Dawn addresses Exorcism as well.