The Brazil attacker blew-up when he was hauled off by an unapologetic coach Xabi Alonso on 71 minutes.
"Me? Me? Mister, mister!" the Brazilian exclaimed, arms wide open, demanding an explanation.
And while he pointed to his chest, his final outburst came with a clear "f*** off" to the sky. Xabi, for his part, appeared to accelerate the conflict, snapping: "Come on Vini, you son of a b***h!"
Once off, and after several angry gestures, Vini Jr opted to go straight to the locker room. And it was then that, according to DAZN, he dropped the bombshell: "I'm leaving the team... I'm leaving, I'd better go."
Following the Brazilian into the home dressing room was goalkeeper coach Luis Llopis, who spent several minutes with the player before persuading him to return to the dugout to see out the remainder of the game.