I was wondering why, against a team with no strikers and who rarely use wing play, they played a flat back 4. I would have thought, with my limited tactical knowledge, a 3-5-2 with Pirlo staying deep (almost a mini diamond with Cassano playing central AM), would have allowed them to flood the midfield (potentially 6 italians in midfield with WBs) and pressure Spain more on the ball. It would also have given Pirlo a sideways route out instead of trying to pass a ball forward against a team with 6 in midfield......
Something like
.........CB......CB.....CB.......
WB.............................WB
...............Pirlo.................
....Rossi...........Montolivo....
..........Cassano................
...................Balotelli........
Probably wouldn't have won them the game against this spanish team (especially if they'd gone down to 10 men) but Pirlo was pressurised out of it and the striker were pretty isolated.