I’ve written 2 new scripts for Blender.
psdHandling is a workaround for crazy space that uses the inverse pose transform for pose space deformations (works only with meshes with bone vertex weights). This should make sculpting corrective deformations more enjoyable.
unposeMesh will ‘unpose’ a mesh that was modeled ‘in pose’ if you give it a posed armature holding that pose. The mesh must have vertex weights for that armature.
Detailed instructions, info on limitations, and download links can be found here.
Enjoy.