I have the tarot card reader's book from the library right now, and I don't see that rumor of the Ono-Lennons being behind the bust, but I know that rumor - that the McCartneys staying in the same hotel the Ono-Lennons stayed in would be bad for their hotel karma, so Yoko called in a favor to keep that from happening. It might have originated with Fred Seaman's book.
The tarot reader does talk about John being very worried that Paul was being mistreated, and kept checking in on him, while alternately claiming not to care. According to the reader, John ...