Houdini to be exhumed?

[javasaurus]

Houdini died Halloween, 1926, supposedly due to a ruptured appendix. His still-living relatives aren't so sure. The master escape-artist had some very serious enemies, and there has long been speculation that he was murdered, perhaps poisoned. According to this MSN article, he is to be exhumed for further examination (there was no autopsy of his body in 1926).

My question: what if they open the casket and he's not there?