Undead Armatures!!

If you don't know what an Armature (from Mass Effect)  is, here's a pic

 

So anyway, back to what I was saying... I killed one of these in a small room in the ExoGeni building (once again, you have to play ME to understand). After a few seconds, it came back from the dead, as if someone gave it a touch of Unity (which only Shepard can do to his squad), and charged up its mass accelerator to kill me. I gaped at it, but managed to dodge the mass accelerator projectile and kill the armature again.

I waited to see if it would rise again, but thankfully, it didn't.

 

Did anything like this ever happen to other ME players here?