What about the fact that Colombo is coming off a serious knee injury and hasn't played serious time since 2002, the year before his injury. Ever since then he's been a back up and hasn't played a lot.
So when you have Petitti that started all 16 games last year, and Colmobo that hasn't played serious time in 3 years, I think Colombo is just geting his reps. It's just an attempt to get Colombo his work.
The thing with Ellis is he is switching positions. He's moving to OLB, so wouldn't parcells want to give him as much work as he could before throwing him in a game. I don't think I'd want Ellis to play in a game if he hasn't worked at that position very much.
Parcells knows what he has with Carpenter. Carp has played every position on the line and BP has aid that carp is a smart player and will be ready week one.
By Jax I expect Petitti to start at RT and Carp to start at OLB.