It moved on contact with the ground, but did not cause the receiver to lose control. As been said, that rule was changed like ten years ago or more - ball can move on contact with the ground - but every forum needs a martyr to try and prove that the Patriots "got away with something"...from the NFL rule book (see note 1):
COMPLETED OR INTERCEPTED PASS
A player who makes a catch may advance the ball. A forward pass is complete (by the offense) or intercepted (by the defense) in the field of play, at the sideline, or in the end zone if a player, who is inbounds:
a. secures control of the ball in his hands or arms prior to the ball touching the ground; and
b. touches the ground inbounds with both feet or with any part of his body other than his hands; and
c. after (a) and (b) have been fulfilled, performs any act common to the game (e.g., tuck the ball away, extend it forward, take an additional step, turn upfield, or avoid or ward off an opponent), or he maintains control of the ball long enough to do so.
Notes:
- Movement of the ball does not automatically result in loss of control.