Ollie had tried to be there, but Dinah had pulled away, and Dean was always just one step ahead of him. It stung, a little. He saw too much of himself in Dean, and he didn't know how Dinah couldn't see that. Why she could forgive Dean's past, but still blame him for things some other Oliver had done. But that was a conversation for another time, or maybe never. So he swallowed his pride and forged ahead.
Keep calm and carry on.
"To be honest, I don't know how much of a team there is left to rejoin. The flock has all but scattered, and everyone is doing their own thing. Part of the purpose of this meeting is to find out who is left, and what I have to work with. Even if I have to track you all down in person and grovel."