Complex sentence: Welch responded by stating that after Fisher admitted to being an ex-member of the NLG, Welch decided to send him back to Boston; he then gently reprimanded McCarthy for his needless attack on Fisher repeatedly using the adjectives "cruel" and "reckless".
Split into simpler sentences: Welch responded by, first, stating that after Fisher admitted to being an ex-member of the NLG, Welch decided to send him back to Boston. Welch then gently reprimanded McCarthy for his needless attack on Fisher repeatedly using the adjectives "cruel" and "reckless".