Kirby is cross.

That was a poor ride, being kind, he gave that animal.

Appeared to look back and shout something at Spencer after he went past the line?

Also appeared to hamper Spencer's mount in the closing stages - either deliberately or accidentally!

Wouldn't mind seeing the head-on

In case you didn't see the head on, he deliberately rode his horse across Spencer's in the final furlong. 3 days.