Complex sentence: He eventually became a partner at World Wrestling Council, only to split with Colón a few years after in a rather acrimonious business disputes with the company management forced him to leave and joined the rival American Wrestling Federation.
Split into simpler sentences: He eventually became a partner at World Wrestling Council, only to split with Colón a few years after in a rather acrimonious business dispute. Personal disputes with the company management forced him to leave and joined the rival American Wrestling Federation.