There is a response contained within the rules to some of this, that would "allow" Williamson to testify against Daic by choice...
Here is the first bit of that:
(c) A lawyer may reveal confidential information:
(4) When the lawyer has reason to believe it is necessary to do so in order to comply with a court order, a Texas Disciplinary Rule of Professional Conduct, or other law.
(5) To the extent reasonably necessary to enforce a claim or establish a defense on behalf of the lawyer in a controversy between the lawyer and the client.
(6) To establish a defense to a criminal charge, civil claim or disciplinary complaint against the lawyer or the lawyer's associates based upon conduct involving the client or the representation of the client.
(7) When the lawyer has reason to believe it is necessary to do so in order to prevent the client from committing a criminal or fraudulent act.
(8) To the extent revelation reasonably appears necessary to rectify the consequences of a client's criminal or fraudulent act in the commission of which the lawyer's services had been used.
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That Williamson "may" reveal that information if he decides to... doesn't mean that he will decide to, or, if he did, that we or Daic would necessarily know about it. But, the fact that he MIGHT decide to... by itself... seems it creates an obvious bit of division in interest between lawyer and client... that might reasonably be used by the lawyer in efforts made in manipulating the court and the legal process... to benefit himself at the expense of the court or the client ?
.JPG)