PoU and Voldemort's fate

[Steve Bates]

No: HPFGUIDX 1039

I know I am way behind everyone else on this, but I finally read 
Paradigm of Uncertainty and, well, wow!!  The only reservations I 
have are a couple of minor inconsistencies and my belief that Cho 
gets too much of a bad rap as it is.  But the writing is excellent 
and the romance angle, which could so easily have become cliche, is 
handled perfectly.  I've never read fanfic before and I know I am 
going to be spoiled now and have over-high expectations for anything 
else I read (but hopefully ASA can fulfill those expectations).
PoU did get me thinking on exactly how Voldemort is to be defeated by 
Book 7.  It has been stated, implicitly and explicitly, that Voldy 
has become something other than a physical human and cannot be 
killed.  So if Voldy is killed, it will be no more than a half-
victory--Voldy will be no more defeated at the end of the series than 
he was at the beginning.  So if you can kill Voldy's body but not his 
spirit, you'd need something that can destroy his spirit as well.  
And, of course, JKR has already introduced something that can destroy 
a spirit, or "soul": a dementor.  Might it turn out that the only way 
to permanently get rid of Voldy is to have a dementor kiss him?  If 
so, how to turn the dementors against Voldy?