Tannhauser's rage

He stabbed the dead youth from the lava of rage of pain surging up through his heart as if from the stones beneath his feet
...
Even in the grip of blind rage, the skill was commendable. Even by the standards established on the Parvis that morning, the sight was obscene.
...
Tannhauser looked up. His gaze met that of a Huguenot who knealt bound and shoeless, waiting to watch the death of his kin, at the outer rim of of the blood. The Huguenot was silent too.

Yet did he mouth the words 'Kill me'?

Or did he merely say as much with his eyes? Or did Tannhauser hear the pleading of his own deranged spirit?
...
He thought: 'I am going mad. And I love it.'
...
Tannhauser turned again. He saw Gregoire take in the bloodbath, in which Tannhauser stood ankle-deep, with gore running down the spear shaft and the dead heaped around him like the proof of unspeakable crimes. He saw Gregoire grin...Gregoire grinned because he was glad to see him and for no other reason at all. He did not care  what Tannhauser had done. He loved Tannhauser. The grin restored Tannhauser's sanity.
-TTCoP, pg 236-238