Chris Brown crew jumps Usher in Las Vegas

 According to Hollywood Unlocked, "a close source shared that" Chris Brown's birthday celebration "went downhill" after Chris Brown "got disrespectful" with Teyana Taylor for an "unknown reason." 

Usher tried to intervene and calm everyone down. However, Chris allegedly called Usher a "coward" and left the venue. Usher followed behind to talk to Chris. That's "when things went completely left, with Chris Brown & his crew allegedly jumping Usher." 

Neither of the artists nor Teyana Taylor have spoken out to deny or clarify these reports. What do y'all think⁉