I am a recovering Althusserian. For decades now I have been Althusser-free, for the most part, but we all have our lapses. The first step to becoming a recovering Althusserian is to recognize that you have no control and are unconsciously always a little bit Althusserian whether you want to be or not.
Louis Althusser is however not so much a poison as what Derrida and Stiegler and Stengers call a pharmakon. That is, something that is undecidable, both poison and cure.