Didn't quite catch the last bit, Art killed Powe, right?? The idea being no one can be bothered to investigate??
Will be an interesting plot-line to see pay-off, considering the 'justified' nature of things.
I'm pretty sure Poe was still alive when Raylan showed up. Besides, I don't see Art as the type of lawman to do something like that.
Btw...Carla Gugino.