Upon watching the video there is only one reasonable thought: "What on earth just happened?!"
MMAFighting has the lowdown:
When [Claudinei] Angelo clearly spat his mouthpiece to recover from the punches, the referee refused to stop the fight. Angelo went on and asked for a "time out". [Evilasio] Silva and [referee Flavio] Almendra didn’t understood what he was asking for, but Angelo decided to quit. The door was locked, so his only way out was jumping off the fence and leaving the arena.