Flash gltich?

I was just in a game where my team was about to make a comeback, only when i flashed in with Maokai, he walked the opposite direction a split second for no apparent reason, during the flash. It was small, very small, but I noticed it. When I point it out, no1 else saw it. They blame me for clicking the wrong way, when I only clicked in the direction of the flash... how can I flash one direction, then walk the other, while clicking relentlessly on the other champion?