Will the Texas defense be a Heisman kingmaker again?  Al
Messerschmidt  Collin Klein has fallen behind Johnny Manziel in
the Heisman race after a disastrous defeat in Waco juxtaposed
with a heroic A&M win in Tuscaloosa. But will Manny Diaz's
defense anoint a Big 12 QB as the Heisman for a second
consecutive season?  In 2011, Texas was coming off a glorious
27-25 victory that sent off the Aggies to the SEC with a bitter
and familiar taste of failure. Their next opponent was the RG3
Baylor Bears, who were building Griffin's Heisman candidacy
after a stunning home upset against the Oklahoma Sooners.  Texas
helped RG3's candidacy in two distinctive manners. First, they
talked up the matchup. Mack Brown praised Manny Diaz's ability
to shutdown dual threat QB's and said he called him for the
Texas DC job after watching his Mississippi State defense shut
down Michigan's Denard Robinson. "If he can corral Cam Newton I
think we can get Robert Griffin," Texas safety Kenny Vaccaro
confidently declared.  Manny Diaz said