The only other thing I can think of would be chaining a series of geometry insertion poses, using readScript, or using Python to load a series of the poses sequentially.  Maybe if each body part had a finalized pose before the next one was loaded, the JP problem would go away.

But at that point it seems like it has become undesirably complicated, really.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.