They haven't ran that formation the whole tournament. I doubt they start now. They ran a 5-3-2 for one half in the first game and abandoned it because it wasn't working.
They have the right tactics now. They shouldn't change it. They finally found some balance.
Thiago Silva absolutely should have been sent off. I'm glad he didnt though. I really like him and that would have been tough to watch with him being captain.