He should have let you play around him and his group. Head pro or not.
I'm a new player, and have been advised to let faster golfers go around, which I do. Sounds like the pro was being rude and pushing his weight. Takes all kinds...
I once had a elderly lady yell at me cause I was taking too long to sink a putt! Guess she was afraid of kicking the bucket before she tee'd off.
There are rude players all over...

Sounds like he needed a hole for a lesson. But he shouldn't have been rude...