Sproles would have never let that hit keep him from scoring. Banks needs to learn not to be such a puss. Just saying.... 
It was a double reverse. Attrail got it first then pitched it back to Brandon...
And Brandon wasn't a pussy on that one long play he had where it was called back for the supposed "chop block" on Kendall (terrible call BTW). Brandon really threw himself into some defenders for the extra five yards or so. 
That makes it
a reverse. The play begins with an end-around (hand-off to the first player moving parallel to the line of scrimmage). The reverse occurs when a player going the other way is given the ball by the player who received the hand-off, thereby "reversing" the direction of the ball.
Announcers screw it up all the time. Today on the Chiefs game, there was a handoff for a counter run (which, admittedly, involved some nontypical motion and a fake, but remained only a counter) that the announcer called a reverse. Announcers just never seem to sit down and learn the actual mechanics of that particular concept, although every now and then a color commentator will correct them.
