I doubt that the Reds suddenly start asking Cueto and Latos to pitch on 3 days rest. Th epalyoff history on pitchers doing that in the last 10-15 years is not kind.
Having said that, the thought that Homer can't pitch at home is likely a small sample size one, as it's the first year it has occured. And, as you say, his September starts at home have been fine.
In any event, the Reds will go with the following order:
Cueto/Latos
Arroyo
Latos/Cueto
Bailey