As LSCatilina says, it is unlikely.
Once scenario that I still think is incredibly unlikely is if the Aztecs (for some reason) end up ruling so much of Mesoamerica, that they run out of acceptable people to sacrifice - or if for some reason they have a disinclination to do so with the locals.
This could be a reason to go north, and through a client state, bring in the Pueblo peoples to sacrifice.
Utterly brutal, certainly awful, but it works.
Though in reality, the Aztecs would need to drastically change their form of Empire for this to happen. Conquering their neighbours, truly annexing them, and expanding into modern Texas and Baja California through colonies, perhaps of certain captured communities and Aztecs.
It'd be a huge (HUGE) change to get that going, but I find it preferable to my first idea.