Moses Teitelbaum, the grand rabbi of the Satmar Hasidim, one of the world's largest and fastest-growing sects of Orthodox Jews, died yesterday in Manhattan. He was 91 and lived in Williamsburg, Brooklyn. His family, through spokesmen, said he died at Mount Sinai Medical Center, where he had been hospitalized for a number of ailments. Rabbi Teitelbaum became leader of the Satmars in 1980, succeeding his uncle Joel Teitelbaum. In Hasidism, a mystical brand of Orthodox Judaism, the grand rabbi is revered as a kinglike link to God, holding vast sway over members' lives. Joel Teitelbaum had transplanted the tattered remnants...