Is it possible that the so-called whistleblower committed perjury in filing his claim? Perhaps he never, in fact, heard anybody say the things he claimed to have heard.
If so, then we are looking at a conspiracy as provable as any other.
"Declaration (required per the California Whistleblower Protection Act)
I swear under penalty of perjury under the laws of the State of California that the facts set forth in the statement of the complaint, and in any supporting information submitted with the complaint, are true and correct to the best of my knowledge and belief. I agree to cooperate in any investigation of this matter and declare that I have read, understand, and will comply with the confidentiality requirements stated above. "
Hey, this whole thing could turn out to be great fun!