Gibbs witnessed a campfire, in Escaped; he just didn't participate. Not that he really participated in this one.

I think Vance would have been surprised that Gibbs let go of the reins, but would have approved letting Tony fix his (and his team's - I'm going to harp on that) mistake.

I like that Tony took responsibility and didn't point fingers at the other two, even though he had a right to say something.