> Yes; in order for trade secrets to be protected, they have to be secret.
This is not true. See the Uniform Trade Secrets Act for the full text. People who know or have reason to know that the information is a secret are bound by the law, and the definition of "trade secret" does not require that the information never have been disclosed to an unauthorized person.
Yes; in order for trade secrets to be protected, they have to be secret.
> Did Bunner work at the DVD Consortium?
I have no knowledge of this.