The sound he makes on being grabbed from another angle is purely from being startled. There is struggle, first from uncertain defense, instinctual and then the vain panic that takes over. That he's not cut deeper and more often is frankly a shock in itself. It's sickening that he wants to hurry an apology, do some manner of appeasement and show he can comply, but it comes out of something old and forgotten in him that he can't uncage.

That order. Do not destroy him. And he's still.

I told you to be careful of his face, Nubaldin.

As he's disrobed and the remains of his finery destroyed. For a moment, he has the look of someone not present for a moment.

That canvas is mine to paint.

His eyes aren't seeing the people he's looking at for a moment, and when he comes out of it, when his mind is no longer in Avernus, his cheeks are marked with tears.