This is a thing that calls my attention Felipao is careful with his midfield selection. I would have expected him to pack the midfield, w/o Neymar your offensive options are a few, without Thiago you're defense is fucked, your best chance is to defend, hope for a set piece or pks.
But alright, that didnt happen. The lack of reaction after 3-0 is the thing you have to question though. Dude, 3-0 is a big trashing, that you're not gonna overcome, tell Luiz that he doesnt have to go attack, and tell Luiz Gustavo to fall down and roll around.
That said, Felipao, Mano, or anyone. This team was begging to crack at some point, maybe not 7-1 like, but when you review the games...the home advantage did anything but help them.