Should Minnesota have scored that last TD vs. Dallas?

I understand both sides of this debate, but in the playoffs if one team is trying to win still (i.e. Dallas in this situation), why can't the other team play the same way?  Dallas was only down 3 scores.  I remember not too long ago on Monday Night where Indy was down 3 scores to Tampa Bay (who had the best defense that season) and Indy came back with 5 minutes left to WIN the game (not even go into overtime). 

I also think it's more beneficial to have the other team score on you then to have them run out the clock on you and seal your fate. 

What are your thoughts??