The article is good in attacking class reductionism, though the author should be criticized for making idealist statements like the above. Even if a communist and a social democrat agree 100% on where the capitalist's profit comes from, the soc.dem's decision to collaborate (rather than to overthrow) is not any less legitimate (or contrary to the logic of history or whatever) as a political choice than the communist's choice for class struggle.
"In the last analysis" is just a method to introduce "false consciousness" through the back door, and "false consciousness" in turn is a cover for the failure to explain why things didn't go according to the Grand Plan. This kind of old-school marxism tries to introduce a non-ideological dimension into the political field in order to say that there are historically privileged world views. Communists can always congratulate themselves that "we have the right take on history", but that's about all it is good for.
Mark Poster's book 'Foucalt, Marxism and History' is pretty good, it's available online here:
http://www.humanities.uci.edu/mposter/books/



