http://codes.findlaw.com/ca/business-and-professions-code/bpc-sect-6103.html

6103. A wilful disobedience or violation of an order of the court requiring him to do or forbear an act connected with or in the course of his profession, which he ought in good faith to do or forbear, and any violation of the oath taken by him, or of his duties as such attorney, constitute causes for disbarment or suspension.