He killed the LAntern because he was about to give up some secret codes or access codes to the enemy that would have put the entire corps and the Guardians in danger. Most likely resulting in the destruction of the GLC.
In GL #7 the Guardians had a brief debate on whether or not to kill Voz simply so he would't be able to ask what happened to Lyssa Drak; I find it hard to believe they'd be incensed enough over John's actions to send the Alpha Lanterns after him.
Unless of course they're just keeping up appearances...
I realize the ship has long since sailed, but I do not like Geoff Johns's interpretation of the GLC as a police force, and I like the idea that they're some kind of army even less. The idea that one person is a police officer to an entire sector of space is ridiculous. Sure, the Corps might have to come toether to fight massive battles occasionally, but in the Silver Age, they were portrayed more as explorers, peace-keepers, and problem solvers, which makes more sense to me.
Yeah but falsely and only once. And the JLU actually took the time to make him interesting and heroic. I couldnt say the same for the comics.
Well John is supposed to be the socially conscious, anti-authority intellectual GL, not the hardass military guy that JLU came up with and Johns has used since. He was also butchered by Starlin in the Xanshi storyline (who was supposed to be Guy Gardener).