First time I've seen a successful disintegrate and it has to hit me
True Resurrection please, or if that's too much trouble (i.e. can't get there, whatever), regular Resurrection is fine. Either way I'll foot the bill.
Edit: Holy flying cow of munchkinism, that's a lot of treasure. Y'know, I was considering Spell Turning, but I figured he'd be busy with the ritual thing... forgot the possibility that certain evil people might have given him Silent Spell - though I still think that should have required a concentration check to process chanting and casting. Ah well, what's done is done.