Raven?

So I finished Snow Crash a while ago but I am a bit confused on what was up with Raven, especially at end. In chapter 20 we find out that the Enforcer, and everyone else who knows about him, is trying to protect Raven. Apparently, he's "packing a torpedo warhead that he boosted from an old Soviet nuke sub...a nuclear torpedo." Squeaky goes on to tell the clueless Hiro that "the trigger's hooked up to EEG trodes embeded in [Raven's] skull. If Raven dies, the bomb goes off."

I thought this was an interesting little twist to the story, and I pondered how they were going to defeat the dangerous and destructive murderer...because you know this is a bool were the good guys prevail at the end. However, I noted the part where Hiro defeated him in the Metaverse and killed Raven there, saving all the hackers (another great part in the novel). But, in chapter 70, Raven in the real world is having a battle with good old Uncle Enzo. Well...it seems Enzo defeats Raven with the skateboard's "RadiKS Narrow Cone Tuned Shock Wave Projector" and Raven is standing "stunned, empty-handed, a thousand tiny splinters of broken glass raining down out of his jacket." I'm just curious as to what's going on here...did Raven just get "stunned," or did the glass shards injure him, ir did Enzo actually kill him. As I look over it again it would make sense he is just stunned, but what happens if and when he does die in relation to the bomb that's connected to his life? This was just something I found myself wondering about, especially the events at the end of the book involving Raven (and how about his little ordeal with Y.T.?...what the heck was that?)!