As far as I'm aware, their minds were unsalvageable. Though if you find information to the contrary, I'd like to know, and would retract my opposition.

[His morals would remain deeply skewed, yes, a retraction of his opposition meaning only that he wouldn't care one way or another what happened to those people, would assist the team in further rescues if they asked it of him only because its the will of the majority. But his bonedeep horror and disgust over preserving the lives of those he believes to be better off dead would at least be assuaged.]