The judge overseeing former FBI Director James Comey’s upcoming trial on charges of lying to Congress and obstruction of justice intervened late Monday to temporarily block a sweeping order for prosecutors to turn over grand jury materials to Comey’s lawyers. US Magistrate Judge William Fitzpatrick cited “a disturbing pattern of profound investigative missteps” in ordering the rare move, with some legal experts suggesting the case against the 64-year-old could even be thrown out as a result.