Hi everyone, thanks for responding to this topic. Sorry for my late response, I've unexpectedly been kept busy in the last few days.

LinkedIn CAN send invites to all your contacts, but only after you give the order to do so. It's a way of quickly inviting everyone you know, instead of sending solo invites.

I'm not friends with ex T on social media (or real life for that matter), I only follow his professional page on Facebook. He has a personal profile too, but it's set to private and doesn't even have a profile picture. I wouldn't want to be (online) friends with him, I see him as my T and nothing else.