[quote=@Forsythe]
No, magic controlled by the ancient language didn't work. We now have possibly a small unit of dragons that could still turn him into diamond if he pissed them off enough, and one could still attempt to use spirits, non-verbal manipulation etc. =P
[/quote]

Yeah, but nonverbal isn't a known form of magic yet.  IIRC Eragon discovers it throughout the course of his adventures(which is why Galby didn't know about it before).  I suppose we could discover it first, and go about it that way buuuut I've always thought that was a bullshit kind of cop out anyway.  

And even if there are ways around it(as there obviously were in the book for Eragon to win, oh, but he didn't even [i]win[/i] the fight, he used the power of compassion and shit to make Galbatorix regret his actions), he can still use the name of names to disable our normal magic, and then use his own normal verbal magic to destroy us before we have a chance to use them.  He's powerful enough without his god word, including it in forces us to deus ex machina our way to victory.  Hell, that's what the author even had to do.  He wrote himself into a corner with how unstoppable his villain was.  A handful of green riders aren't going to be much more of a threat than a cadre of Elvish sorcerers.  Probably [i]less[/i] of one, to be honest.
 
I think the best thing to do is to say that his distraction with our new riders' presence keeps him from his research where he would otherwise eventually discover the name of names.