I think that the song is about further straining a relationship to try and make things better in the long run. The narrator goes to Chickamauga and it causes someone who'd never leave on their own to hate him. Example: a cheating boyfriend whose current girlfriend just isn't the one or maybe Jay seeking new band members. He's using the irony of the fact that Chickamauga is also the location of one of the bloodiest civil war battles to find a miracle of averting an impending disaster. The reasoning for the actions are because it's been so bad that he doesn't want to taste those tears again.
I think that the song is about further straining a relationship to try and make things better in the long run. The narrator goes to Chickamauga and it causes someone who'd never leave on their own to hate him. Example: a cheating boyfriend whose current girlfriend just isn't the one or maybe Jay seeking new band members. He's using the irony of the fact that Chickamauga is also the location of one of the bloodiest civil war battles to find a miracle of averting an impending disaster. The reasoning for the actions are because it's been so bad that he doesn't want to taste those tears again.