When your wRC+ numbers get that low, I don't think 73 or 54 or 33 really matter. Even though it's not the side that the Sox would prefer, Alberto is at least an above average hitter from one side.
To put it another way, at 2B I'd take Alberto's 109 vs LHP and Andrus' 83 vs RHP over Andrus' 94 vs LHP and Leury's 71 vs RHP. Same for TA at SS