This was a great episode. Notice how after Tony's beating of Perry last week Chris is all of the sudden on board for the idea of outsourcing the hit on "the mayor of munchkinland." I think Tony truly thinks it is ridiculous to have a Vito (or anyone else) killed just because he is a fanuch. However, the scene with him and Sil is very telling. He knows that, even though he is 'the boss', some things are just out of his hands. Sil was being, as usual, a valuable consigliere by reminding him of this. No matter what Tony wants, this is one of those cases where his choice of a livilihood dictates the choice he has to make in this specific instance--Vito has got to go.