My First Unsafe Manoeuver

So as I learn more about the bike, and get better at handling him, I have grown more confident in what it can do.  I am doing a bit more filtering in moving traffic, which allows me to get ahead of slow moving traffic or vehicles that make me nervous.  I am very much aware that I am taking a few more risks, and I'm being as careful as possible.  However part of being a safe rider is knowing what your bike can do and what it can not do.
So I was following a few large vehicles, and felt I had enough power and space to pass them.  I passed the bus, and then went to pass the lorry.  As I was beside it, the driver decided he wanted to move across the center line, and forced me to go into oncoming traffic.
I would not have attempted the manoeuvre if there were vehicles coming toward me, so the lane was empty.  However, there is a central reservation, so I had to swerve right to avoid it, as there was a car in the left lane (in front of the lorry).
Anyway, I kept on going, my heart racing a little bit faster.  I took a moment to think about it, and realised I should not have attempted this move; there would have been opportunities moments later that would have allowed me to pass safely.
Lesson learned.
Here is the video.