CHAPDISC: DH36, THE FLAW IN THE PLAN

[Carol]

No: HPFGUIDX 185448

Nikkalmati:
> <snip> I am still not clear whether Harry was protected by his
sacrifice or by the wand's refusal to harm him, its true master.  If
it did not know he was its master in the forest, when did it find out?

Carol rssponds:

At the same time Voldemort and everyone else did, when Harry explained
that Draco was its master but he had forcibly taken Draco's wand,
which (if the wand chose to accept that disarming of its master as
making him unworthy of its loyalty) could make Harry its master. IMO,
the wand had to choose, and it chose Harry.

Carol, who has argued this point before and really doesn't want to go
into detail about it again