Vlaars penalty ball almost rolled back into the Goal

Did Romero Celebrate too early after saving Vlaar's penalty ?

It is not clear if the ball touched Vlaar before almost rolling back into the Goal. Because if that did, then its not a Legit penalty Goal.

FIFA's rules on penalty shootouts clear the matter up, stating: 'A kick is successful if, having been touched once by the kicker, the ball crosses the goal line between the goal posts and under the crossbar, without touching any player, official, or outside agent other than the defending goalkeeper. 

'The ball may touch the goalkeeper, goal posts, or crossbar any number of times before going into the goal as long as the referee believes the ball's motion is the result of the initial kick.'

This was clarified after an incident in the 1986 World Cup shoot-out between Brazil and France. Bruno Bellone's spot-kick rebounded off the post and hit Brazilian goalkeeper Carlos before rolling into the net.