My problem with this is just how far Hal went while calling himself Parallax. While Johns' undid the major deaths, I don't recall anything retconning Hal's belief that he killed the Guardians and his fellow Corps members at the time it happened. So if you can't just blame the Fear Creature for that then Hal is still an attempted mass murderer on some level.
If I was Kilowog and Parallax "killed" me the way we saw in GL #50 I couldn't trust Hal again if i believed anything but that Hal wasn't in control.