A federal judge’s email exchanges with former colleagues in the U.S. Attorney’s Office “cast a pall” over certain decisions he made in a criminal case he was handling at the time, an appeals court held.The 7th U.S. Circuit Court of Appeals on Monday vacated Earl R. Orr’s conviction for illegally possessing a firearm as a felon.The court ordered that a jurist other than U.S. District Judge Colin Stirling Bruce of the Central District of Illinois be assigned to preside over further proceedings in the case.Bruce’s ex parte …