A Minnesota man who served nearly 25 years in connection with his wife’s death walked out of prison on Friday after authorities vacated his murder convictions and allowed him to plead guilty to manslaughter, citing a problem with expert testimony from a doctor whose statements in other cases have also come under scrutiny. The murder conviction hinged on the testimony of Dr. Michael McGee, who said Rhodes grabbed his wife by the neck, threw her overboard and ran her over several times, the Attorney General’s Office said in a statement Friday. As part of that investigation, a forensic pathologist found that Jane Rhodes’ death was not inconsistent with an accidental fall, the office said.