Traditionally PRC had two factions. The Maoists and the rivals, let's call them the pragmatists. The Maoists were bent on communist doctrines and making great leaps. The pragmatists were more into what already works. The heads of the pragmatists were Liu Shaoqi and Deng Xiaoping.
http://en.wikipedia.org/wiki/Liu_Shaoqi
http://en.wikipedia.org/wiki/Deng_xiaoping
The famine as you mentioned was attributed in part to Mao's radical policies, and because so Mao stepped down while Liu Shaoqi took his chair for a few years. While Liu was in power he played with capitalist policies similar to those in place today (this was the early 60s), Mao got paranoid and ousted him and Deng, and cultural revolution was launched in part to undo their popularity. Liu died in house arrest.
After Mao died in the late 70s, Deng took over and finally switched to market economy. The current line of leaders descended from his faction of pragmatists. Maoism is pretty much dead in China, a new split in the party is between the populists and the princelings, much more similiar to the dichotomy of liberals and conservatives in the west.
http://en.wikipedia.org/wiki/Generations_of_Chinese_leadersh...