This is an absurd approach. Seriously. How could a coach give the ball to the other team knowing it's over if they score a TD. Take the ball! If your D is as good like the OP stated, then depend on them to make the stop AFTER you scored your points. Here's how I see it:
KICK the ball. They score TD. You go home.
RECEIVE the ball. Score TD. They go home. Score FG or don't score anything and you still have a fighting chance with your D.
How could anyone feel that kicking the ball is the right option? I always thought Cowher was a great coach, but his choice makes me wonder!