All of the discussion of skeleton cleaning assumes
(if I'm reading the discussion correctly) a human
skeleton.  If that's the case, then the discussion
should be about the appropriateness of a museum
keeping human remains in the first place.
 
Hasn't anyone heard of NAGPRA (the Native
American Graves Protection and Repatriation
Act)?  Most culturals consider the disposition of the
remains of their dead to be special.  For museums
to ignore these values by curating (or worse,
displaying) human remains is offensive.