As you will have read previously, I volunteer on a cyclescheme approved kids course - as such, I am aware of the publications. But, thanks for pointing them out anyway as other may not be aware of them - though, they are far from perfect and the CTC is really not very good. Hence we dumped the CTC partnership.
Some of the advice in the publications is somewhat dated and assumes that all drivers stick to the highway code (duh!). We teach the kids to be more adept and to ride beyond themselves - a little bit of the motorbike training course and road craft, rarely taught these days if at all.
There is nothing wrong with my post, your opinion is that I am wrong - lets get that straight.
However, I am not concerned about your opinion - Perhaps you lack experience as a road user or commuter and are just a bit upset that I have contradicted another cyclist and yourself. You guys seem to need cameras, I have not needed one, ever?!
The OP has put himself in the situation, otherwise it would not be on here. Yes, drivers get agitated, they do!! And yes, I have pointed out 2 ways in which the OP could have avoided any altercation - it is not advice. Just pointing out that, with the benefit of hindsight, things can be done very differently.
As I say, I would have done the whole thing very differently, and would not have had the incident as a result as I would have been long gone - but thats probably more down to speed and experience (light bike and big legs + a cigar waiting for me at home)
What the OP did is classically what I see everyday at a round-a-bout on my own commute - usually it is the FWC's or noob/nodders that do it - it is a legit road move and one I would do in a car. But on a bike, you have to be more crafty, faster and pre-empt the exit and filter.
Live and learn and live again to fight another day.
