Lex recognized the distinct sound of cloth flapping in the wind and knew exactly what power up was coming for him. It was troubling because this particular power up had a homing function, so it wasn't easy to avoid.
This was not a matter of defense, and he dared say that even if he used Talk to the Hand and put up a barrier, it would not be enough to escape from the effects of this particular power up. If he still had the speed boost power up, he could have used it at the right moment to escape, but since he did not he would have to get creative.
Without even needing to think about it, he entered the state of flow and drove his cart to the edge of the track. Relying on his keen intuition, his incredible sense of hearing and his spirit sense that he had surrounded his cart with, he waited for the power-up to come just close enough.