Romo hasn't been a good leader so far. This year he seems to be making some changes, but they seem to have in part been prompted by Witten. He seems to have a ton of respect for Witten and will follow his lead.
Whether he likes it or not, good leaders will get on a teammates arse when necessary. A lot of people say Tim Duncan doesn't, which is hogwash. I've seen the guy in person lace into some teammates for sloppy play.
As much as I am loathe to say it, I thought Eli did a good job of showing this type of leadership in their game against the Saints. IIRC, Bradshaw missed a blitz pickup and Eli fired into him a bit, but then put his arm around him and you could basically see that his point was he demanded better from Bradshaw, but knew Bradshaw was putting for the effort.
You don't have to be a drill sargeant out there, although I've seen very effective leaders act in that fashion in sports and while it won't win them popularity contests, it won them championships. But you have to demand excellence from yourself and your teammates and have to do what it takes to get it. If that means calmly explaining this or asking them what's going on from their vantage point, so be it. But there do come times when you have to let it be known that playing under your capabilities will not be tolerated.
I think we saw glimpses of that in the KC game, but I think I am personally waiting to see it in a bigger game, against a tougher opponent, and for Tony to turn things around in that game by leading the team.
YAKUZA