This excerpt taken from the PBKS 10-K filed Mar 1, 2007.
Amendment or Termination of Plan
7.1 Amendment or Termination of Plan. The Company may, at any time, direct the Administrator to amend or terminate the Plan, except that no such amendment or termination may reduce a Participants accrued benefit. If the Company terminates the Plan, the date of such termination shall be treated as a Termination of Employment for the purpose of calculating Plan benefits and the Company shall pay to each Participant the benefits such Participant would be entitled to receive under Section 4.1 of the Plan over the same period such benefits would otherwise have been payable under the terms of the Plan.