Excellent question, Paul.
Using SRT, it is easy to verify that the evil purpose is gone when the entity is handled.
The person no longer has the ability to dramatize it. He is not holding back from dramatizing it, he has nothing there to hold back. I will ask him, "Can you contact that purpose now?" and they may spot a similar evil purpose but that one will be gone.
A person can have many different entities dramatizing evil purposes, but he can usually tell when it is a different being with its own evil purpose.
The person not only feels a huge relief, but they also spot many times that they were dramatizing the evil purpose.