Now I've seen the vid, tbh wtf were you doing blocking him? He got out of the way, you should have blasted past with a wave like the previous rather than sit at his side and block him in
Happens to me all the time, move out of the way from some tosser ( not saying you are
) who then slows down and means I have to knock cruise off and brake. Doing 45k miles plus a year, this is in my top 3 of annoyances....