ported over the outrider model from mp, got the textures and animations to work, but she's bent at an odd angle. anyone know how to fix this? video

I want to use this spetznaz model as a zombie in a map I wanna make, but as it's from Black Ops 1, it's skeleton isn't right for Bo3. And I would try to do all this by myself because I hate sounding like a beggar, but I don't have Maya and I can't get the free trial. So can someone who knows how rig this model? Thanks alot