I guess it depends upon your definition of "flat". If "flat" means emotionless, that's probably false (and you're probably right). If "flat" means "getting their asses handed to them" then that's indisputably true (and you're wrong).
Ravens' opening drive:
- Rice 83 run TD (7-0 Bal)
Patriots' opening drive:
- Maroney 2 run
- Brady -3 pass to Edelman
- Brady -9 sack by Suggs, fumble, recovered by Bal
Ravens' next drive:
- McGahee 3 run
- McGahee 3 run
- Rice 5 run
- Rice 5 run
- McClain 1 run, TD (14-0 Bal)
Patriots' next drive:
- Brady -7 sack by Lewis
- Faulk 9 run
- Brady incomplete to Aiken
- Punt
Ravens' next drive:
- Rice -1 run
- Flacco incomplete to Mason
- Flacco incomplete to Rice
- Punt
Patriots' next drive:
- Brady 6 pass to Faulk
- Faulk 5 run
- Brady incomplete to Maroney
- Brady INT by Carr
Ravens' next drive:
- McGahee 0 run
- McGahee 9 run
- Flacco 1 run
- Flacco 13 pass to McGahee
- Rice 1 run
- Rice 1 run, TD (21-0)
Patriots' next drive:
- Faulk 4 run
- Brady INT by Reed
Ravens' next drive:
- McGahee 4 run
- McGahee -4 run
- Flacco incomplete to Mason
- Cundiff 27 yd FG (24-0)
So, um, yeah, the Patriots got absolutely
destroyed in that opening quarter, in every conceivable fashion. Typically, when people say that a team came out flat, they mean that they got rolled. But if all you mean is just that they weren't emotionless, who knows.....