Congratulations on your 2nd Dan black belt achievement. I know from my friends it is quite scary.
And I would say that thank God you have a national champion as your opponent, because he is THAT good your head was spared.
Imagine if there was a less qualified individual you might have a huge problem if he did not target you well and you ended up being really hurt.
So overall, that's a really smart move of your coach despite you became the punching bag of the day.