There are anerobic composting methods that are even more passive then what is described in the article. For example, in Bokashi composting you innoculate your

There are anerobic composting methods that are even more passive then what is described in the article. For example, in Bokashi composting you innoculate your organic matter with a blend of anerobic microbes (primarily Lacto Bacillus) store in anerobic conditions for a few weeks. When you empty the bucket it doesn't look especially decomposed but it smells sweet and pickled. You can then bury it in your yard and it rapidly decomposes into soil. This method can safely decompose meat, dairy, and all sorts of materials you wouldn't ordinarily consider safe for at home aerobic composting. I imagine it would be an ideal system for a compost burial process so long as the family is okay with the idea of fermenting their loved ones..