Saving Jesus from Embarrassment

You could wonder if the groom of Cana knew the wine was running out, or had someone decided to ask in his stead, to save him the embarrassment of knowing he had not planned.  Maybe he did know but was reluctant to approach directly the uninvited guests, Jesus and his disciples, perhaps preferring to avoid embarrassing them.  Maybe going through the caterer and Mary was the least intrusive way of asking might they leave or drink less.