Kolb traded back to Brewers

The Dan Kolb experiment is over. Atlanta has traded Kolb back to the Brew Crew instead of just non-tendering his contract and letting him go as a free agent. I expect Turnbow will remain closer and Kolb will be a setup guy for the Brewers. In return Atlanta got relief pitcher Wes Obermueller. Obermueller isn't very good but it's gotta be an upgrade over Kolb, right?