DISREGARD: Blender 2.77 seems to fix issue by allowing one to remove the Root bone to meet Maya Specs.
Monthly Reminder that this is still broken
##Please note that now animation playback is consistant with all avatars now, regardless if Maya or Blender made avatar
While Turning on Pre and Post rotation solved folding issues, the rotations are still incorrect for the playback of avatar animations made in Blender.
the IK also behaves sorta so that my feet are consistently below ground.
Here is an example of the animation that bugs up like crazy: http://www.norteclabs.com/HF/animations/SquatProneLaydown.fbx Developers may use this for testing blender animations as it features everything from translation to rotations.
0-60 squat, 60-> 150 Prone and 150 - 200 Laydown
Running on FBX Review, which is Autodesks Official FBX preview tool
But… in world.