Deconstruction is not postmodernism and is an apolitical rhetorical tool.
When the social scientists utilize deconstructionism, it is most definitely an aspect of postmodernism. When it is used to rid our language (and hence our epistemology) of meta-narravatives (such as ‘transcendence’), then it is without question considered an aspect of postmodernism. It is very important to distinguish deconstruction from the viewpoint of the professor of literature as compared to those in the behavioral sciences, esp sociology.