That's just a figure of speech. What actually happens is a ghost can't rez a guardian in darkness, thus the ability to die. Destroying a ghost (which would be relatively easy) would kill the ghosts guardian permanently.
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[i]* Loads TX-130 Saber-Tank lazer round*[/i] Don't know how many times since have to say this, but the ghost has a shield that is on par if not stronger than the Ward of Dawns shield. I don't know how people forget about the shield.
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People don't forget about that shield. As far as I'm aware, you just made it up.
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[i]* Loads TX-130 Saber-Tank lazer round*[/i] No, the shield is obviously there.
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You looked at the ghost and assumed it had a shield. Saying it looks like it doesn't really hold up.