Section 1509. Disqualification of shareholders, directors, officers and employees

If any shareholder, director, officer or employee  of  a  professional
  service  corporation  who has been rendering professional service to the
  public becomes legally disqualified to practice  his  profession  within
  this  state, he shall sever all employment with, and financial interests
  (other than interests as a creditor) in, such corporation  forthwith  or
  as  otherwise provided in section 1510. All provisions of law regulating
  the rendering of professional services by a person elected or  appointed
  to  a  public  office  shall  be  applicable to a shareholder, director,
  officer and employee of such corporation in the same manner and  to  the
  same extent as if fully set forth herein. Such legal disqualification to
  practice  his profession within this state shall be deemed to constitute
  an irrevocable offer by the disqualified shareholder to sell his  shares
  to the corporation, pursuant to the provisions of section 1510 or of the
  certificate of incorporation, by-laws or agreement among the corporation
  and all shareholders, whichever is applicable. Compliance with the terms
  of  such  offer  shall be specifically enforceable in the courts of this
  state.  A  professional  service  corporation's   failure   to   enforce
  compliance  with this provision shall constitute a ground for forfeiture
  of its certificate of incorporation and its dissolution.