Here is an excerpt talk by C.J. Woodworth, given in 1913, where he admits to be demon possessed. He was the sole editor of the Golden Age magazine.
There was a time for five consecutive nights when I never slept a wink; then came a time when the strain was too much; my mind became unbalanced, and I came directly under the influence of evil spirits, so much so that for three days I was as completely under demonical control as was Mrs. Eddy when she wrote "Science and Health."
Previous to this time I had prepared a 36-page book against the Vow, printed in double column, in which all Scriptures which seemed to be directly or indirectly against the Vow were arranged. I know now that all these Scriptures were suggested to my mind by the evil spirits.