There is no best way to release his name without putting him at undue risk unless you immediately transfer him across the country.
They have to release his name because some group named Hackers something has misidentified the police dispatcher as the cop so he and his family are in danger. Now that they’ve learned this blackmailing trick, they’ll continue to out the wrong person in the future. Hopefully, the cop’s family are safely far away from MO. No matter the outcome, they’ll never be able to return. Take a lesson from Zimmerman.