By TERRY JOHNSON KING
Miami News & Latin American Writer
    To fast or not to fast--that seems to be the question for the imprisoned Poder Cubano (Cuban Power) spokesman Dr. Orlando Bosch Avila.
    Bosch, and the seven other men and one woman who have been charged with shelling foreign ships--including a Polish ship in Miami's harbor last month--had decided to refuse solid food other than bread and sugar cane juice as long as they were jailed. (The woman, Miranda Cruz, has since been released.)
    But for Bosch two obstacles cropped up.
    The jail will not furnish special diets for fasting, and he is sent only the regular fare.
    And his periodic attempts at fasting has aggravated the stomach condition which has plagued him for years despite earlier corrective surgery.
    Assistant U.S. Attorney Don Bierman, who is prosecuting the nine Cuban exiles for the government, said, "Bosch is receiving whatever medical help is needed.  Not eating, of course, has made him sicker.  But there is a doctor there full time."
    The eight men will be arraigned Friday morning on the charges of conspiracy to damage foreign vessels, according to Bierman.  As the group was apprehended by the FBI rather than local officials they were not indicted for any of the 53 local bombings; those are not Federal offenses.
    Meanwhile, a letter purportedly from "Ernesto," leader of Poder Cubano--and the FBI charges that Ernesto and Bosch are one and the same--was found in newsmen's mailboxes early today.
    In it he said, "Because of the imprisonment of Dr. Orlando Bosch and others I have urgently come to Miami to personally take a hand in matters."
    He added that he would announce another temporary chairman for Poder Cubano (Bosch has been the acknowledged spokesman for the group for only a month) and "show that the charges against Bosch and his companions are false."