Every renegade strategy like the negative cryonics one have to be viewed as a risk by those betting on the standard approach.

This renews the question of what to do to increase the chance of cryo-survival. And that prompted the idea what to learn from the egypt. Aftre all they also preserved their body. Their behavior is consistent with a hope of revival (much) later. Now their mummification didn't work, but can't be sure of our cryo-mummification either. But the pharaos and their staff surely considered a lot of means to protect their bodies. And were comparable successful (on non-biology points).

See this post which also draw this analogy: http://www.cryonet.org/cgi-bin/dsp.cgi?msg=12799

Google for cryo+egyp gets a few results: