barleywine jump start

after almost a year, i'm trying to revive the barleywine that was stuck at 1.030. i've taken out 1/4 gallon and added another 1/4 gallon of water and pitched us-04 into a starter to see if it comes to life. the water/wort mixture sure foamed up, like it was already partially carbonated. if this starts krausening, i'll pitch it back into the carboy with the other ~4 gallons and see if it starts brewing again. it doesn't matter either way, as i'll just bottle anyway and hopefully the new yeast will help it carbonate.