In the upcoming documentary 'Man on the Run,' Paul McCartney delves into one of the most challenging periods in The Beatles' history, explaining his reasons for suing the band. The conflict intensified following the death of their original manager, Brian Epstein, which left the surviving members divided over the choice of his successor. McCartney's refusal to back the proposed manager, Allen Klein, who had the support of John Lennon and other bandmates, stemmed from his concerns about how Klein would manage The Beatles’ finances.

McCartney recalls a pivotal moment marked by the phrase 'f--- you, John,' underscoring the deep emotional rift that had developed among the band as they struggled with personal relationships and business disagreements. He expressed resentment about Klein's potential control over their financial legacy, stating, "I saw through it. The way things were going, Allen Klein would just swallow up all The Beatles’ fortune." This legal battle represents not just a moment of conflict, but a significant turning point for McCartney, pushing him toward his future success with Wings.

The documentary, set to be released on February 27, promises to shed light on McCartney's perspective as he navigated the tumult following The Beatles' breakup. It highlights the trials he confronted as he stood firm against the majority opinion of his bandmates in the face of potentially losing the band's legacy. This retrospective is crucial for understanding McCartney’s motivations and the lasting impact of The Beatles' dissolution on his subsequent career and personal life.