So my analysis of the thread is this: People either think that death-ward protects against implosion or it does not. Every argument seems to be a back-and-forth that progresses like this: "it doesn't have the [death] tag!" to "It kills you outright!" Since neither of these parties seem to able to be dissuaded by those statements this could go on forever. I personally reside in the first camp but since the rules are so ambiguous in this sense and even the guys at WotC have no idea how this works I say just go ask your DM and play it that way. If you're wondering how it works in OotS, depends on which camp The Giant is in and I don't think any of us can speak for him on the matter.