He does indeed have his sunglasses on. They help somewhat. As does his good arm, that comes up to try and protect himself, somehow, from the horror that is to come.

He's very surprised when it turns out that it's just warmth. Healing warmth. Warmth that immediately eases the numbness and uselessness of his limbs. "W... what the...?"

But he's not so much of a stunned idiot that he's going to keep sitting there. This is still a fight, and more roaches are coming.