Fox owns the decision to allow the NHL to lift local blackouts, the NHL in turn will contact the local team’s broadcast department to let them know about permission being given to lift a local blackout. The team then decides if they want to lift the blackout on things like Center Ice and Game Center Live.
Due to the Fox/DISH Network issues, Fox has rescinded the ability to lift blackouts for all NHL teams. It doesn’t matter who is carrying the game, the blackout restrictions stay in place for any game that is not being carried by the local Fox Sports Network affiliate network. There is no recourse at the local level, this is a Fox decision that the NHL and its’ teams need to comply with.