I thought his voice at the end was him reflecting on the humans kicking his butt during their war 100,000 years prior. I don't recall the exact wording, but I assumed this was that or perhaps the weird "second form" thing the Forerunners take on when they die (Bornstellar talks about this in the beginning of Cryptum).
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[quote][b]Posted by:[/b] terroboy He'd dead that grenade didn't kill him but that fall most definitely did. [/quote] Read above; he fell into a slipspace portal, came out the other end, and had enough gusto left to give an expository monologue to the rest of the Forerunners/Precursors elsewhere in the universe. Pretty much every indication points to him being alive. I call it the Frank Woods effect: no matter how -blam!- ed a character should be, unless there's a body, that character is coming back.