Ian Paul Wright is a rehashing of Ian Steedman, who himself is a neo-Ricardian and should be ignored on that basis. This version of the transformation problem is a problem with their neo-Ricardian theory, not Marx.
One rebuttal to this sort of thinking was offered by Alan Freeman in Marx after Marx after Sraffa. Freeman is co-author of the temporal single-system interpretation of Marx, and also happens to be the spouse of fellow Marxist Radhika Desai.