LFS's gifs [56k beware]

[Pipa]

Letting aside all emotions here, i will simply quote the rules.

rules Wrote:5.4. Force / Physical Contact

Any force used must be calculated and tactical. The direct impact of intentional contact should cause very minor or ideally no damage to either car. Ramming is forbidden.

http://city-driving.co.uk/rules/

I see no issue here. And if you don't like chasing a certain person then you don't have to chase him. Just like i won't chase you anymore, it's quite simple actually.