Steve had rarely been so caught off guard by a statement, and the way he blinked after Tony made it clear he'd had no idea this announcement was coming either, despite having called the meeting. He had the length of Tony's speech to try and compose himself, but when Tony walked out, Steve still didn't know what to say.
He was torn between running out after him to demand to know what was going on, and trying to smooth things over with the team. If there even was a team. Were they all going to leave?