I hope I haven't killed your thread. 

I wanted to note that I've tested a working process for editing Poser dynamic hair in an external application.

• Export the guide hairs.  Poser is able to export line .obj files.
• Edit the hair in a 3D modeler which supports line geometries.  I was able to test this using Blender 2.48.  Blender 2.60 no longer seems to support line .obj import, out of the box, although there may be an add-on script for that.
• While editing, do not move the root vertices for the hairs.
• Export the shaped guide hairs.
• Load the new shape as a morph target on the original hair prop in Poser.
• Set the morph to 1.0 and bake the morph into the geometry, using the bake script.

That process seems to work.  Unfortunately, Blender's toolset doesn't make the process much easier, so I've only performed a proof-of-concept test and don't have any results to show.  Other programs may offer more flexible tools for handling imported line geometries.

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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.