It seemed to roll back fine for me...
I don't do a lot of editing and I don't think I've ever rolled back an edit until just now, but it looks like the way it works is that earlier versions of the post have a "rollback" link that will revert the post to that version.
I'm going to leave it rolled back for now, but the guy who did the editing has updated this earlier question which has lots of discussion about that SSL/TLS question.