That's more likely to be a 5-3-2 or even 5-4-1 when Brazil looses the ball. Dani and Marcelo joinning the centre backs in a line of 5 and Hulk tracking back to midfield. Nothing wrong with it, defensive football usually wins in the World Cup and it's probably the smart thing to do the way the Colombian attack has been playing. Only problem with that formation is that they have to take the chances if they appear. They steal the ball and start a counterattack, they have to score, because there's not much creativity in that lot appart from Neymar and Oscar. Maybe Scolari is playing mind games, telling the Colombians to attack so they can look for spaces behind the fullbacks and central midfielders when they gain the ball back.