The Steelers use of timeouts this season has been dreadful to say the least. You burn 2 of them early in the 2nd half and you end up with only 1 in a close game. It's one thing to be up by 2 or 3 TD's and burn them. When you're down in the game, trying to claw you're way back, you need to be aware of what's going on and save those TD's.
When the Texans took over with about 2:46 to go the Steelers were already behind the 8 ball. When the stopped Foster on 3rd down they lost over 30 seconds in clock time.
That's as much the players not being aware of the game situation as it is the coaches not preparing them for what they'll see.