if not for being held all the way through the middle of his route when he was trying to break outside.

He set the defender up with an inside fake. The defender jumped inside and then knew he was beat when Jo Jo planted and started to cut outside. That's why he grabbed him. Otherwise, as Trevor Matich said, its an 81 yard TD or at the least a 15-20 yard gain for first down.

The corner had zero help behind him and would have been beat badly had he not grabbed hold of Jo Jo.