Profootballfocus.com re-focus: Saints/Cowboys

This. Shanle has been average at best this year and Dunbar has made more plays in limited action. While Dunbar doesn't seem in danger of being the next Rickey Jackson, it's still time to move to the young lion.

It might be that teams run at the second-stringer when they see him come in, so he has more opportunities in his limited action.