Complex sentence: In truth, Ike was never at the Ritz; he had not been seen in public for years following his and Tina's divorce in 1978 and had remained in Los Angeles and had been estranged from Tina for quite some time by 1981.
Split into simpler sentences: In truth, Ike was never at the Ritz; he had not been seen in public for years following his and Tina's divorce in 1978. Ike had remained in Los Angeles, estranged from Tina for quite some time by 1981.