Did Voldemort lift the curse of the DADA position during the Deathly Hallows?

Question

The curse of the DADA position in Hogwarts made it impossible for a teacher to take the position for more than one year. The curse was put in place by Voldemort as a revenge for not being allowed to teach the subject himself (and maybe to weaken further opponents).

This sometimes resulted in the teacher being seriously injured or even killed (Quirrell, Crouch Jr.)

During Harry Potter and the Deathly Hallows the position was taken by a Death Eater - Amycus Carrow.

Did Voldemort lift the curse to prevent Amycus being injured/killed? He did not care too much about his followers but hurting them without a reason makes little sense.

Answer 1

It doesn’t seem like it - JKR says the curse broke after his death.

From what J.K. Rowling says in an interview, the curse was broken after the Dark Lord died.

MV: Do you-- do Ron and Hermione or Harry ever return to Hogwarts in any capacity?

JKR: Well, I can well imagine Harry returning to give the odd talk on-- on Defense Against the Dark Arts. And-- I-- and, of course, the jinx is broken now because Voldemort's gone. Now they can keep a good Defense Against the Dark Arts teacher from here on in. So that aspect of the-of the wizarding education is now provided for.
_{^{- Today Show interview (July 26, 2007)}}

This implies he either didn’t try, or was unsuccessful in, removing the curse on the Defense Against the Dark Arts job, since it only broke after his death, not after he took over Hogwarts and put Amycus Carrow as its teacher. However, we don’t know whether he didn’t try or was unable to remove it. It’s also possible that he didn’t intentionally or knowingly curse the Defense Against the Dark Arts teaching post, but that his anger at not getting it caused ‘accidental’ magic to curse it, which would explain why he’s so willing to put his servants (Quirrell, Barty Crouch Jr., and Amycus Carrow) in the position, and why he never used a similar curse again.

It’s unclear if it’d affect Amycus anyway - he taught Dark Arts.

Whether or not the curse would have affected Amycus Carrow is unclear - he taught Dark Arts, not Defense Against the Dark Arts. The subject became the opposite of what it originally was, and not knowing exactly how the curse worked, it’s impossible to say for sure if it’d affect Amycus or if it’d consider the Defense Against the Dark Arts teacher post empty, since no one actually taught that.

“Amycus, the bloke, he teaches what used to be Defence Against the Dark Arts, except now it’s just the Dark Arts. We’re supposed to practise the Cruciatus Curse on people who’ve earned detentions –”
_{^{- Harry Potter and the Deathly Hallows, Chapter 29 (The Lost Diadem)}}

If it was an intentional curse, it’s possible that the Dark Lord knew it wouldn’t affect the Dark Arts teacher, so he wouldn’t need to remove it. However, we don’t actually know if the curse affected Amycus, or very much about how it worked, other than making the Defense Against the Dark Arts teacher leave within a year, requiring Dumbledore to hire a new one every year.

Answer 2

It is not entirely clear whether Voldemort even has the power to lift the curse he placed on the position, but situational irony suggests that he cannot.

One of the implications of there being a Death Eater as the dark arts instructor during Harry Potter and the Deathly Hallows is that the dark lord is not going to be able to create a stable regime with Hogwarts loyal to him; because even the dark arts teacher Voldemort himself get installed is fated not to last more than a single year. This is just one of the ways in which Voldemort ends up hoisted by his own petard, and the way Voldemort's actions end up being self-defeating is a major motif of the last book.

Answer 3

I don't believe the curse was lifted because of a JKR quote that says, "Well, the curse is lifted now that Voldemort is gone", which implies that he chose not to lift the curse.

We also see Amycus tortured, put under the Imperius curse by Harry and McGonagall, and sat in a net held captive with his sister, which is a traumatic experience that renders him unable to do his job, which is what the curse does:

Amycus got up, walked over to his sister, picked up her wand, then shuffled obediently to Professor McGonagall and handed it over along with his own. Then he lay down on the floor beside Alecto. Professor McGonagall waved her wand again, and a length of shimmering silver rope appeared out of thin air and snaked around the Carrows, binding them tightly together.

I don't believe he would have lifted the curse because of the amount of contempt he shows all of his followers. The curse was not lifted for Barty Crouch Jr. and he was one of Voldemort's favorite servants, so why would he lift it for a slimy character like Amycus Carrow?