It would be interesting to know if the witness was able to name the victim, and if that named person was, or was not one of those whose body was recovered, and who was autopsied.
Milosevic has access to the full autopsy results (given to the Serb government via Pristina University in March of '99), so it's just a matter of time before they're introduced into evidence and the contents discussed - either during the course of the prosecution's case during Ranta's testimony, I assume, or by Milosevic to refute the claims of this particular witness, which makes it interesting that it hasn't happened yet if the autopsies do in fact invalidate the testimony in question.
Whatever, it's all speculatory until the autopsy results are made public, and then there are the 5 additional fatalities who weren't autopsied by either the Serb/Byelorussian or EU teams. This particular enigmatic facet of the case has some time to run before enough information is available to resolve it.