Rotation not working as expected

I have an imported model from the Unity store, and everything works fine except for when I try to attempt to change the rotation of the child transforms.

Here I am attempting to make "Bip001 Spine1" look at the cube and as you can see I'm getting some interesting results:

     //animationUpperBody = Bip001 Spine1
     //lookAt = LookAtMe
     animationUpperBody.LookAt(lookAt);

Any thoughts?