Garrett did not hurt his chances to be HC in Dallas.

I think he (Garrett) as earned a shot IMHO. But I still think Jerry Jones tries to make a splash and hire a coach like Gruden (no way he gets Cowher, with JJ having to have his hands in everything). But I think JJ is gonna go for the "big name" hire, rather than the "best for his current team" hire. Seems like his M.O.