Soloveitchik acknowledges the doctrine of Original Sin, and incorporates it at length into his philosophy of the nature of man. The Original Sin, is important not because it separates man from God (as it is in Christianity), but because it presents an alternate view of God, a demonic God-a gnostic reality.
http://kavvanah.wordpress.com/2012/12/27/rabbi-soloveitchk-on-original-sin/