“Clark Pinnock regarded the doctrine of endless punishment as “morally flawed” and a “moral enormity.”  If the “outrageous doctrine” of the traditionalists were true, God would be a “cruel” and “vindictive” deity. In fact, He would be “more nearly like Satan than like God, at least by any ordinary moral standards….”  Indeed, the traditionalist’s God is a “bloodthirsty monster who maintains an everlasting Auschwitz for victims whom he does not even allow to die.”" quoted from here

Here is Clark Pinnock’s article on the The Destruction of the Finally Impenitent see also  an extract from Fire Then Nothing

Here is a tribute to Clark Pinnock in Christianity Today:

http://www.christianitytoday.com/ct/2010/augustweb-only/43-22.0.html