(a) A covered attorney shall not act as advocate at a trial in which the covered attorney is likely to be a necessary witness except when:

(1) The testimony relates to an uncontested issue;

(2) The testimony relates to the nature and quality of legal services rendered in the case; or

(3) Disqualification of the covered attorney would work substantial hardship on the client.

(b) A covered attorney may act as advocate in a trial in which another attorney in the covered attorney's office is likely to be called as a witness, unless precluded from doing so by §776.26 or §776.28 of this part.

(c) [Reserved]