I don't think Elam is dead. If so, that was one bizarre way to kill him. I think Grant (if the show comes back) will have a prominent role next season.
Also, was this the season finale? It usually says "season finale/series finale" in my info section for DTV subscribers. It didn't say that...
Edit: Ok, so it was the finale. There better be a season 4. Too much left up in the air, and there aren't any positive critics of the finale at all. What a shame.