Carroll blows the game!
I'm not much of a football guy, but why the fack would you throw the ball with only a half yard to the goal line? Running it in seems much more obvious to me, but what do I know?
Plenty of teams will throw inside the 5 with good effectiveness but it generally requires a QB with top tier accuracy as the windows are exceedingly small. A lot of it depends on what matchups you have going for you (both in terms of run vs pass and what kind of pass to call etc.)
This particular play however was pretty mind boggling. 2nd and goal with a couple yards to go...you have Lynch, defense is tired and deflated after the fluky Antonio Freeman MNF 2.0 play....all signs pointed to the run being the right option (irrespective of whether NE expected the run).