Looks like they are playing with the "3 balls pass the head string" rule. In order for the break to be legal 3 balls must pass the head string (balls pocketed count as balls passed). So, in order to maintain control over the table you must pocket at least 1 ball and have 2 balls pass the head string.
How did he make a ball on the break and not be able to get at least 2 balls past the spot? Must have been a pretty soft break.