Why Won't You Stay Dead?

[spoilers?]

It appears Loghain won't go down without a fight. I had Alistair kill him at the Landsmeet, see. But he's still around. At the cutscene where I choose my party for the final battle, I can't choose Loghain, but subsequent conversation options allow me to choose him to lead the second group at the gates, despite him not being present. And then, Alistair's farewell speech during that same cutscene is replaced by the disembodied voice of Loghain, giving his farewell speech instead. Eerie.

I'm guessing this is because I used one of those party edit cheats somewhere along the way, because there was this one locked box, and I was really annoyed at not having a rogue around, and at the prospect of having to backtrack all the way through that Thaig just to reach one locked box. Anyway...

My point in all of this, and the reason for this being in the toolset forum, is that I am attempting to edit my savegame to kill Loghain, and his disembodied voice, once and for all. I'm hoping there's some kind of variable(s) I can edit which will allow me to do this. I've opened my savegame.das (is that right?), having vanquished an "Out of Memory" issue that decided to rear its ugly head, but I dunno where I should go from here. Or will it even be possible?

Thanks.

p.s. Yeah, I could probably just continue and see what happens, but it really annoys me that Alistair's bit got replaced by Loghain's, so I'd rather ameliorate the issue.