http://i166.photobucket.com/albums/u106/E-rip-mave/GETOUTOFTHERE.png
Took a screenie ^
After it was brought back by the other healer it ended up stuck over there. You can still kill it if it comes close to the wall or just shoot it with your gun.
But this shouldn't happen.
Anything that comes back from the dead is either a Zombie, or imbued with the power of the ancients.... and you don't mess with ancient powers man. :P