I don't know of such cases. From http://www.alcor.org/Library/html/neuropreservationfaq.html

"Neuroseparation" is performed by surgical removal of the body below the neck at the level of the sixth cervical vertebra at a temperature near 0ºC. - - The cephalon (head), is then perfused with cryoproectants via the carotid and vertebral arteries prior to deep cooling. For neuropatients cryopreserved before the year 2000, neuroseparation was performed at the end of cryoprotective perfusion via the aorta.

If I understand correctly, at least Alcor's current procedure for neuropreservation would be compatible with removing organs to be donated.