He arches an eyebrow to indicate that he doesn't appreciate being asked a question like that, but he supposes he owes McCree an answer.

"Don't remember much."

Not of the actual fight and resulting carnage. He attributes that to trauma. Most of the aftermath is intact, however--pulling himself out of the wreckage and feeling more like a wounded animal than a person. Feeling that the only thing he could do is get out and get away, try to process just how things managed to get to this point.

And then, when the dust cleared, he realized that maybe the world didn't need him after all. He remembers watching his memorial service on television.

"Once I realized what happened, seemed better to stay dead. Let everyone get on with their lives."