u may have already seen this, but this is what i did with mine. pretty cool to see the fish swimming in the orbits/arches and sinus cavities.
Can you boiling it? May be faster and you and your family wouldn't have to smell that thing all summer long.
Of course is going to smell (lol) but for a shorter period of time.
I have another idea. Is it possible for you to get the "meat eating beetles". I know they wouldn't eat the mommified (sp?) meat, but if you re-hydrated it they might do their work.