Remarkable observation and study.
(but) '當蔣經國 '背棄' 了他父親的思想后,...... ' is debatable. During that time period, 他 had to (就) 開始著手開放黨禁、報禁,解除戒嚴令,允許反對派組黨, to follow the world tendency and response to the want of people he had ruled, and carried all of these out gradually as we wish to see it would happen '(t)here' soon。