Only philosopher I know that defended that piece of hackery, was Marvin Farber.
See, Farber, Marvin. The Search for an Alternative: Philosophical Perspectives of Subjectivism and Marxism. Philadelphia: University of Pennsylvania Press, 1984. Chapter 1: Subjectivism, Phenomenology, Marxism, and the Role of Alternatives, pp. 1-26, + notes, pp. 240-241.
http://www.autodidactproject.org/other/farber3.html
-- Michael Pugliese