What's the correct call

[Refk]

Watching my son's Varsity game last night .... Our player has the ball just above the key and the defensive player is attempting to tie up the ball. Our player pivots and swings his arms/elbows through unbelivably fast, but does not create contact. The official called a technical foul on him .

My question(s) are:

1. I believe the correct call would be a violation due to excessive swinging of the elbows (if the official believed that occurred) from my vantage point it wasn't b/c he swung through as he was pivoting. Am I correct ?

2) What is the call if he had made contact with the defensive player ?

3) My real concern was for the defensive player, if he had been hit with this motion it really would have caused injury , is there anything we as officials can do ?

Thanks