I tend to believe so. I don't believe that the idea of original sin is incompatible with an innate human goodness. We are created in the likeness of the ultimate good, after all, and fallen is not the same as bad.
^ I agree.
Humans in our fallen state have allowed our search for various goods to be twisted into wrongs. But every sin is still at some level a distorted attempt at some good. You can see this in all sorts of ways when you deal with people. Revenge is a distortion of justice. Cowardice is a distortion of prudence. Marxism is a distortion of charity. Judgment is a distortion of truth. Idolatry is a distortion of faith. etc.
We may be selfish and prioritize the wrong things, but still, on some level, do what we think think or have deluded ourselves into thinking is good (I would say "right" but people artificially separate the two and are more open about violating the latter).