Conflict with Otis Williams: Otis Williams, the Temptations' founder and co-lead singer, had growing conflicts with Ruffin. According to Williams' autobiography, Ruffin's unreliability and diva-like behavior created divisions within the group, leading to arguments and clashes between the members.
Unmanageable Behavior: Ruffin's erratic and sometimes aggressive behavior contributed to his eventual dismissal. He had altercations with bandmates, crew members, and even fans, tarnishing the Temptations' public image.
Declining Record Sales: Despite the Temptations' continued success in the early 1970s, their record sales and chart positions were not as dominant as before. Motown Records was undergoing its transitional phase, and Ruffin's departure during this period exacerbated the label's challenges.
Replacement by Dennis Edwards: Motown was determined to keep the Temptations' success going and decided to replace Ruffin with Dennis Edwards. Edwards brought a different vocal style and charisma, allowing the group to continue without a major decline in popularity.
In summary, David Ruffin's dismissal from the Temptations resulted from various issues, including drug abuse, conflicts with bandmates, unreliability, declining record sales, and Motown's decision to keep the group moving forward with a new lead singer.