Blender imports to unity: What's with this silly hack?

hi all. i'm having some issues with animated objects importing to blender, and it's taken me a while to figure out why, thanks to this site:

http://www.edy.es/dev/2014/02/a-better-blender-to-unity-3d-importer/

I think i'll let him explain the problem, much better than i could

Blender imports to unity: What's with this silly hack?