See that's weird, I like the move a lot more with a 1 run lead. It sets up the game winning DP,(With a 2 run lead you can concede a run, and not necessarily need the DP) additionally that 3rd run on 1st base isn't as important as the runner that's already on 2nd, so who cares if Fielder's on. I don't know if you're talking about a different situation but Fielder was walked with two outs so there was no need for a DP in this case. Either way, I think Lou made the right move walking Prince in that situation.