The latest edition of the Lutheran journal Dialog has several articles exploring this theme. They are currently available free at the Blackwells site. Details of the articles:
Disturbing Politics: Neo-Paulinism and the Scrambling of Religious and Secular Identities
A Review of Udo Schnelle and Francis Watson on Paul
Did Paul Get Luther Right?
Paul and the Revisionists: Did Luther Really Get it All Wrong?
Heidegger on Luther on Paul
There is also a nice article by Robert Jenson
A Theological Autobiography, to Date