This is a bit of a side note, but apparently that link was from 2005, which was at the same time of the Alcor Rabbit Kidney Experiment. It looks like research into freezing may have advanced since then, because when I was looking into it, I heard about Norio Odawa and Vitrification Freezers, which came out after 2005 and don't appear to use chemicals at all:

http://en.wikipedia.org/wiki/Vitrification_freezer

http://www.forbes.com/global/2008/0602/053.html

http://singularityhub.com/2011/01/23/food-freezing-technology-preserves-human-teeth-organs-next/

I don't know if these are promising on brains or not, but if anyone has heard something, please let me know.

Edit: As a further note, he mentions using Fluctuating magnetic fields for reheating... Ironically, if I am reading this correctly, the fields are actually used during cooling itself instead.