Apparently, Valodia Matos found he wasn’t given enough time to recover from an injury. So he kicked the referee’s fatass.
And that’s about all I can say in his defense, given that he kinda sucker kicked him, it’s not that he couldn’t control his rage.
Also, his kick was terrible. If you already decided to shit on your career, why on earth would you want to attack with a pansy front leg dollyeo-chagi/ roundhouse kick like this?