Totally. Before that chapter I felt like Piers was just a tag-along for Chris but now I think he's the coolest partner in any RE game to make that kind of sacrifice. That scene where he shoves Chris in the pod and Chris is screaming at him banging against the window got me a little choked up to be honest.
It was completely unexpected, too. Capcom was baiting us with the prospect of Chris passing down the torch to Piers and the opposite happened. As much as I wished for Piers to takeover I have to give Capcom credit for giving us an ending that wasn't totally predictable.