Sounds like you heard what you wanted to hear. Sandro hasn't been on the team for quite a while, so that was probably around a year ago, and i don't recall him saying anything like that - squadrons were always about group chat, and that's about all they would ever do to help organuse PvP. Squad membership is also considered in instance selection, but that's about it.
I'm aware of Sandro leaving. I put a thread up about it where it became apparent a lot of other people weren't.
I recall it being remarked upon somewhere. I'd better do some checks.
Considering people didn't even pick up on Ed telling the community who did watch the recent live stream that Samarco was out, I could still be right about picking up on this remark regarding large scale PvP situations. Who knows...