A língua de Grindelwald nunca foi removida

Sim, o Picquery diz que eles removeram a língua devido a ele ser muito persuasivo.

PICQUERY It was necessary. He’s extremely powerful. We’ve had to change his guard three times—he’s very... persuasive. So we removed his tongue.

_{Fantasitc Beasts: The Crimes of Grindelwald - The Original Screenplay, Scene 3}

No entanto, como descobrimos durante a fuga, Grindelwald já havia trocado de lugar com Abernathy e ambos usaram a Poção Polissuco para se parecerem uns com os outros.

SCENE 7

[...]

SPIELMAN No more silver tongue, eh?

But GRINDELWALD is transforming...

SCENE 8

EXT. THESTRAL-DRAWN CARRIAGE—NIGHT

ABERNATHY adjusts his grip underneath the carriage. His face too is changing. His hair is turning blond and lengthening... he is GRINDELWALD. He raises the Elder Wand.

SCENE 9

INT. THESTRAL-DRAWN CARRIAGE—NIGHT

GRINDELWALD’S rapid transformation into a tongueless ABERNATHY is almost complete.

SPIELMAN (shocked) Oh!

_{Fantasitc Beasts: The Crimes of Grindelwald - The Original Screenplay}

Quando a fuga estiver completa, Grindelwald lança um feitiço para criar uma nova língua para Abernathy.

SCENE 15

INT. THESTRAL-DRAWN CARRIAGE—NIGHT

GRINDELWALD appears at the door and nods to ABERNATHY. He throws the door open so the water pours out—along with the two remaining AURORS. GRINDELWALD clambers inside and retrieves the vial from ABERNATHY’S mouth by the chain, casting a spell that grants ABERNATHY a new forked tongue.

_{Fantasitc Beasts: The Crimes of Grindelwald - The Original Screenplay}