My bet – you annoyed the biker far more than you realised but the biker is a total tool.
cars not getting out of the way on motorways used to really annoy me – they forget how quick a bike can accelerate so stay out in the overtaking lane rather than pull in and let the bike past then pull back out again
I suspect you jumped right in without reading what I wrote? I did exactly that. My mates have “super” bikes, I ride an engine-less one. I really get the whole 2 wheel thing, I was not looking to do anything except make his overtaking as easy a process as I reasonably could, I had no axe to grind.
After a bit of reflection and self analysis last night I have come to the conclusion he was a total **at and I was pretty much blameless (very seldom have I ever come to that conclusion) and you know what, next time it happens I will remain in the outside lane (I wasnt hogging I was overtaking) and if another rider parks on my bumper with his high beam blinding me I will drive safely but make no effort to help him/her out.