When I watched it the first time I was surprised you were taking that exit, as you were very far over to the right, almost hugging the traffic island. Perhaps the driver was also surprised, and then instead of hanging back when you indicated, he decided to 'nip through'.
A bit of impatience on his part, but not really a big deal.
To be honest, I'd have forgotten all about it in about 30 seconds.
As an aside, your contact in the licencing office seems a bit over-zealous. The driver was 'absolutely floored' by the footage? Hmm.