If Peterman stays, which he likely will, then he will be used for mop up duty.
Dobbs starts and Peterman in garbage time. If you play Jennings or Dormady, they lose an entire year of eligibility just so they can hand off the ball.
Dooley burned Worley's redshirt to take a garbage time snap, or else he would be here next year too.
You can see that Butch wanted to redshirt Dobbs this year. An extra year in the system is great.
When a QB goes in for garbage time, all they do is hand off the ball. Why waste a full year of eligibility for that?