I did something similar, I had a hoppy APA that for done reason wouldn't clear and was too acidic, I couldn't put my finger on what went wrong. It just wasn't 'right'. So I threw it into my soured barrel with a little top up wort, threw some belle saison yeast in it and now letting it ride. I tasted it a 2 months and it's really cool, it's tropical fruity funky. Now to try to collect more bottles to bottle it.