Its difficult to say without having lived through the same experience, the video kind of lets us know what went on but not how we would have perceived it being there.
I think my take would be to use the cycle lane when there is loads of traffic and perhaps just going a bit slower in it when its busy, it looks fine from the video, better than a lot of roads but again difficult to say until you are howling long through the debis and potholes.
I think in this case the coach driver wasnt going 100 percent out of his way to be a twat and has no right to use a ten tonne vehicle to educate someone on a bike, sometimes there does seem to be some escalation of a minor incident into a big deal, almost like you are playing to an audience due to the camera, "look what he did to me" and then rather than just getting on with it following it up and kind of making it worse, the video with the truck cutting across you was genuinely scary but this, its sequel just doesnt make me think it was you being totally the victim, I see it 50/50 and have coach passes as close if not closer than this on Chelford road regularly, thing is, at least the side is smooth and there is less opportunity to interface with the rear wheels compared to a quarry wagon or tipper, funny how cycling makes you think.