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In this article, we demonstrate the relevance of the conceptual categories of systemic analysis put forward by the Mental Research Institute (MRI) for the study of interpersonal conflicts, based on a review of the literature on conflicts, their management, and their types. We explore how its analytical concepts can be linked to the ongoing renewal of life histories and the internalization of contexts, in the sense of Bordieu’s “habitus.” This conceptual framework is then applied to a case at a Canadian university, which took place in two steps: an interpersonal conflict involving harassment that led to a conflict between the conflict management department and the staff union. The systemic analysis of relationships has led to an understanding of interpersonal conflict in terms of symmetrical schismogenesis and then “rigid complementarity,” which creates a form of relational frenzy. The systemic analysis of the relations between new trade unionists and members of the university management shows a positive schismogenesis and makes it possible to understand why and how an institutional rupture occurred, enabling the emergence of cooperation to prevent or resolve interpersonal conflicts.