I first heard of this style a few years ago. Basically it seems to be pretty much identical to Judo. In the below short documentary, it is said Yudo combines the technical excellence of Japanese Judo along with the power and conditioning of European Judo.
Anyway, worth a look. No douby about it, Korea are one of the top Judo nations in the world. Who knows what role Judo plays in this???
"Let your food be your medicine, and your medicine be your food"