As to Lu's interview with Hu being one of the expressed reasons why Hu fell, this was simply an excuse by the upper echelons of China's government--an "external expression of the inner party struggle."
至於陸鏗的訪問捲入胡耀邦的失勢，則是中共最高層權力「內部鬥爭的外在化」，找藉口而已。