You know, I have a slight feeling that in a later episode it will come out that it wasn't really Ralphie behind the stable blaze. I mean, it could have been him, but equally, it could have been someone else who just had an argument with Tony. Possibly Paulie? Maybe he did it because he knew Ralphie would get blamed? Is that too far fetched? Either way, I wouldn't be surprised if it turns out to be someone else who actually set the fire...maybe in a casual conversation, someone will admit it to the wrong person...