A new Typemock add-in is released: Typemock Racer 1.0.  using the Typemock Racer, you could do a parallel inspection on your multithreaded code.  Mailny, you can use it for finding and recreate deadlocks.  You create your code the same way as a unittest, but put the attribute [ParallelInspection]above your test.

You can read everything here: http://www.typemock.com/learn_about_typemock_racer.php