Rather than reproducing the rather confusing introduction to this interview with Hudis provided by KPFA, I will provide a more revealing introduction given by Jason Schulman in his review of Hudis's recent book Marx’s Concept of the Alternative to Capitalism from Logos.
Hudis makes plain from the beginning of Marx’s Concept that he will not be visualizing the technical details of socialist society, nor does he pretend that Marx ever offered a comprehensive blueprint for such. His aim is modest: “to see what implicit or explicit indications [Marx’s work] contains about a future, non-alienating society.” Hudis makes it clear that—contrary to those who would enlist Marx’s support for an imagined “market socialism”—that value, or the computation of wealth in monetary terms, is seen by Marx as specific to capitalism and as incompatible with a classless society. The retention of value-production would render “socialist” society unable to overcome capitalism’s “inversion of subject and predicate, in which the products as well as the actions of people take on the form of an autonomous power that determine and constrain the will of the subjects that engender them.” ....
Marx famously criticized other anti-capitalists of his day, most notably anarchist forefather Pierre-Joseph Proudhon, for their failure to acknowledge the centrality of alienated labor to capitalism, and Hudis stresses the importance of alienated labor in explaining the oppressive and defective nature of the official Communisms of the 20th century, which he claims merely changed wage- and property-relations in order to produce a “state capitalism” wherein a ruling class imposed forced labor on workers.