Pokémon X and Y Playthrough Discussion

...huh?

I fish up a wild Poliwrath. It takes my Pikachu down to red with a single Circle Throw.

"Pikachu is in a pinch. It seems like it's about to cry..."

Pikachu immediately flees the fight all on its own by jumping diagonally backward off its "platform". What the hell?

Circle Throw knocks the opposing pokemon away. It works like Roar and Dragon Tail by forcing them to switch out, if it's a wild encounter then it automatically ends.