Was this dickish riding?

[Grahamm]

So, that move - was it a dickish move giving us bikers a bad name, or would you have filtered in a similar manner?

Provided you didn't cause the van driver to have to make a large adjustment to his speed or direction, I'd say it was a perfectly valid bit of filtering.

The only thing I'd have done is, when he started flashing his lights etc, just put my hand up, which he can interpret as an acknowledgement, an apology or a friendly wave (whichever makes him happier) rather than trying to engage with the idiot!