Belichick, Patriots one move ahead in chess game

You've seen the last-minute interception that clinched the Patriots' big game 49 victory -- if not live, then in incessant replays.
And you've seen or heard the second guessing of Seahawks coach Pete Carroll.
Why would Seattle pass with 20 seconds left, the ball on New England's 1 yard line and Marshawn Lynch in the backfield?
As the teams lined up, I was thinking that the Seahawks would be swarming around Lynch so much that a pass could be open.
Carroll might have been thinking the same thing when he called for the pass. But he wasn't expecting that New England's Bill Belichick might be one step ahead of him.
Belichick was like the customer in the AT&T commercial who one-ups Lily in appreciation for appreciation of appreciation by saying merely, "I appreciate that." By the the time Lily recovers with "ahhhhh," it's too late. The point has been made.
The Patriots were not too late.
In a post-game interview, Malcolm Butler, the rookie who made the interception, said when he saw receivers stacked on the right end of the formation, he was looking for the pick play designed to get Ricardo Lockette open.
Why would Butler be looking for that? Had the Patriots spied on Seattle practices?
No, it was probably just good old-fashioned scouting.
Were there examples of pick plays the Seahawks used this season to score on short passes in similar situations?
On Sept. 21, Seattle had the ball on Denver's 5 with 23 seconds left in the first half. There was a stack and a third receiver on the left end, with Lynch split out wide on the right. Tight end Zach Miller ran downfield, Lynch slanted across his backside, the deep defender was late getting to him and Russell Wilson hit Lynch for a touchdown.