I’ve been leaning away from the idea of Quirrel being Voldemort because there are so many differences between him and canon!Quirrel… They don’t appear to be the same person and the details of Quirrel’s affliction are different. At the very least, the possession is different, either for a fundamental reason or because HPMOR!Quirrel is more capable of resisting Voldemort.
This leads to a few hypotheses:
1) Quirrel is not possessed at all and suffers from some unrelated affliction, such as the side effects of a dark ritual. (Doesn’t discount the possibility of Quirrel actually BEING Voldemort, no need for possession, depending on circumstances of his ‘death’)
2) Quirrel is possessed by Voldemort, but is able to resist in a way that causes or exacerbates the zombie state
2a) Quirrel is slowly losing against Voldemort (explanation for increasing frequency of zombie state)
2b) Quirrel actually overpowered Voldemort after he was possessed and counter possessed Voldemort, thereby gaining Voldemort’s various resources (Voldemort rallying might explain increased frequency of zombie state)
3) The method of possession is somehow different, causing different symptoms.
Keep in mind that the only actual evidence for HPMOR!Quirrel being Voldemort is the proximity-based sense-of-doom and the problems with casting spells on each other. This is actually quite different from what happens in canon, where the issue is with the wands, not their persons. Also, the clash between the Patronus and the Killing Curse didn’t cause the Priori thing to happen. So the doom feeling could have a number of different explanations while the spell-casting issue doesn’t seem to be the same as that of canon (and even if it were, that’s only evidence of Quirrel using Voldemort’s wand, not actually of BEING Voldemort… And wasn’t the location of Voldemort’s wand what Bellatrix was trying to tell Harry during the escape?).
It seems to me that if Voldemort isn’t actually the referent of the Prophecy (as speculated by others, it might refer to Death instead) then Voldemort might actually have died. Alternatively, I like the idea of Voldemort inadvertently casting a ritual while murdering Lily—perhaps Voldemort’s body, power, life, or a combination of the above we’re sacrifices in addition to the sacrifice of the target’s mother. It’s hard to speculate what the actual result of that ritual might be aside from the sacrifices, but any of those effects on Voldemort would have similar consequences for Voldemort.
I think it’s unlikely that it’s all an elaborate decades long hoax by Voldemort since as you say it just doesn’t make sense for him to give up the war like that. I would almost say that just as likely to happen might be some crazed wizard with an outsize talent for memory charms coming up with a way to effect a memory charm on a nationwide scale to completely fabricate Voldemort’s entire history and existence… Maybe Mad-Eye should take another pass at Gilderoy.
I’ve been leaning away from the idea of Quirrel being Voldemort because there are so many differences between him and canon!Quirrel… They don’t appear to be the same person and the details of Quirrel’s affliction are different. At the very least, the possession is different, either for a fundamental reason or because HPMOR!Quirrel is more capable of resisting Voldemort.
This leads to a few hypotheses:
1) Quirrel is not possessed at all and suffers from some unrelated affliction, such as the side effects of a dark ritual. (Doesn’t discount the possibility of Quirrel actually BEING Voldemort, no need for possession, depending on circumstances of his ‘death’)
2) Quirrel is possessed by Voldemort, but is able to resist in a way that causes or exacerbates the zombie state 2a) Quirrel is slowly losing against Voldemort (explanation for increasing frequency of zombie state) 2b) Quirrel actually overpowered Voldemort after he was possessed and counter possessed Voldemort, thereby gaining Voldemort’s various resources (Voldemort rallying might explain increased frequency of zombie state)
3) The method of possession is somehow different, causing different symptoms.
Keep in mind that the only actual evidence for HPMOR!Quirrel being Voldemort is the proximity-based sense-of-doom and the problems with casting spells on each other. This is actually quite different from what happens in canon, where the issue is with the wands, not their persons. Also, the clash between the Patronus and the Killing Curse didn’t cause the Priori thing to happen. So the doom feeling could have a number of different explanations while the spell-casting issue doesn’t seem to be the same as that of canon (and even if it were, that’s only evidence of Quirrel using Voldemort’s wand, not actually of BEING Voldemort… And wasn’t the location of Voldemort’s wand what Bellatrix was trying to tell Harry during the escape?).
It seems to me that if Voldemort isn’t actually the referent of the Prophecy (as speculated by others, it might refer to Death instead) then Voldemort might actually have died. Alternatively, I like the idea of Voldemort inadvertently casting a ritual while murdering Lily—perhaps Voldemort’s body, power, life, or a combination of the above we’re sacrifices in addition to the sacrifice of the target’s mother. It’s hard to speculate what the actual result of that ritual might be aside from the sacrifices, but any of those effects on Voldemort would have similar consequences for Voldemort.
I think it’s unlikely that it’s all an elaborate decades long hoax by Voldemort since as you say it just doesn’t make sense for him to give up the war like that. I would almost say that just as likely to happen might be some crazed wizard with an outsize talent for memory charms coming up with a way to effect a memory charm on a nationwide scale to completely fabricate Voldemort’s entire history and existence… Maybe Mad-Eye should take another pass at Gilderoy.