What the heck?!? I mean, I was expecting it, but really? Can't the boys have an ally for more than 5 minutes please? Was Gabriel too much on the same level as Lucifer that he'd hurt the boy's journey. *sigh* I suppose having Cas as an ally is okay since he's further from Lucifer's league but Gabe just needed a good shot.
What about the weapon? Can only arch angels wield it? Probably not, since Kiva tried to kill with it too. So there's this weapon lying around. Can that not be an option because no one can get close enough to stab the Devil before he kills you? What about Sam then?
Gack! I was so hoping Gabe would be an ally after Changing Channels and then he was and then he's gone :( RIP