You don't think him wanting to warn and save his family from the fires of hell was motivated by anything other than selfish and/or arrogant?
He is in hell. He is bereft of the Holy Spirit so how can there be any good, noble, virtuous, humane or lofty sentiments? He has been left to the devices of his own god, himself, and his personality and nature are freed from the constricts of the "restrainer" or societal norms. He cares for nothing and nobody but himself. It is "all we like sheep have gone astray, we have turned every one to his own way" raised to the highest level.