Give me any coach who would do things differently away to Barca, having a 3-1 lead playing with 10 men.
That's not oldschool Italian football, that's surviving. Mourinho set his team up brilliantly in the first leg and defensively things were really well organized this game aswell.
Also, Barca were simply too slow to really create anything, we've seen Barca do far better at home, it's not just because of Inter.