It is documented that he has used ghost-writers.
Let’s. See the link and names. If you can’t produce than you are at same level as spreading rumors / false witnessing. Which is equal to thou shalt not kill
If you have NOT seen the fact for yourself and are able to reproduce it you are spreading rumor A rumor is believing what someone else told you without them giving you proof. A name, a receipt , and jacket cover something admissible in court. You can justify your behavior to me but not to the All Seeing One.
Remember that when you say your prayers this evening. The sins I have confessed— The sins cannot see
Judge not that you be judged
Others have produced your documentation keep it handy for next time.
BTW at one time I too was writing a book with an editor. She became unavailable and the project ended. I kept the material we worked on. The property belongs to me. It is my ideas. She was a paid assistance