This excerpt taken from the DFS 8-K filed Jul 9, 2007.
6. Termination of Service and cancellation of awards.
(a) Cancellation of unvested awards. Your unvested restricted stock units will be canceled if your service as a Director of the Company terminates for any reason other than under the circumstances set forth in this Award Certificate for death or Disability.
(b) General treatment of vested awards. Except as otherwise provided in this Award Certificate, your vested restricted stock units will convert to shares of Discover common stock on the Scheduled Vesting Date. The withholding provisions set forth in this Award Certificate will continue to apply until the later of (i) the date your restricted stock units convert to shares of Discover common stock or (ii) the date the shares of Discover common stock are delivered.