has the founder faced any expulsion?
Yes, he was expelled from Fatah.
Abu Nidal
Fatah had been discussing convening a peace conference in Geneva; the hijacking was intended to warn them not to go ahead with it. In response, in March or July 1974, Arafat expelled Abu Nidal from Fatah
who is abu nidal? He was the founder of Fatah. what is it? The Revolutionary Council, a militant Palestinian splinter group more commonly known as the Abu Nidal Organization (ANO). what does the name of the organization mean? It means "opening", "conquering", or "victory". were they involved in any battle? Yes, the Battle of Karameh against whom? The Israeli Defense Forces (IDF) what caused the war? The  attacks against Israel, including rockets strikes from Fatah and other Palestinian militias into the occupied West Bank. where did it take place? The Jordanian village of Karameh
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Abu Nidal [SEP] Expulsion from Fatah
Two months later, in November 1973 (just after the Yom Kippur War in October), the ANO hijacked KLM Flight 861, this time using the name Arab Nationalist Youth Organization. Fatah had been discussing convening a peace conference in Geneva; the hijacking was intended to warn them not to go ahead with it. In response, in March or July 1974, Arafat expelled Abu Nidal from Fatah. In October 1974 Abu Nidal formed the ANO, calling it Fatah: The Revolutionary Council. In November that year a Fatah court sentenced him to death "in absentia" for the attempted assassination of Mahmoud Abbas. Seale writes that it is unlikely that Abu Nidal had intended to kill Abbas, and just as unlikely that Fatah wanted to kill Abu Nidal.