Complex sentence: In 1980 he severed his relations with MNLF Chairman Nur Misuari when the latter refused the reforms demanded by Pundato of the organization with allegation of ideological differences and a leadership style tilting MNLF to one-man rule.
Split into simpler sentences: In 1980 he severed his relations with MNLF Chairman Nur Misuari when the latter refused the reforms demanded by Pundato of the organization. Pundato alleged that there was dysfunction in the organization, ideological differences, and the leadership style tilting MNLF to one-man rule.