It's because they played a scheme that made us come out of what we normally do. We seemed out of sync. In reality we were doing what we always do, taking what the defenses gives us, but in this case they were giving us what defenses normally do not.
Most defenses figure the best way to beat us is making us take many small chunks and they hope to make a play in 3rd down or bust through with a sack to disrupt the flow.
Houston decided to take away the efficient "easy" plays and make us make the big ones.