Dynamic soaring as a means to exceed the solar wind speed

Similar dynamic slope soaring has been researched and demonstrated to dramatic affect by Spencer Lisenby and others: https://www.youtube.com/watch?v=nv7-YM4wno8&t=3s.

In the video I linked he describes how they engineered and flew a RC glider at a speed of 519mph.

Makes a lot of sense that this could be applied on a larger atmospheric scale for spacecraft.