For what it's worth, I had a similar thing happen the other day (same game as my whistle-related post).
In the final period, V ball handler gets past the defender who then grabs him from behind. An easy intentional foul call, right?
Not according to the home coach who tried to argue that such an act wasn't intentional. I finally told him "That's enough," after he kept it up.
Visiting coach calls time out to discuss their strategy for the closing seconds. Meanwhile, the home coach comes and still wants to discuss the call. Although he stayed civil, it was clear we were going in circles, so I told him either "I''m moving on" or "We're moving on," and I started to walk to my time out spot. He started to follow me, and replied, "Well, I'm not!"
I calmly blew my whistle, reported the T to the table and left the immediate area to go tell the Visiting coach we'd be shooting a technical foul and to ask who'd be shooting.
While we shot the free throws for the technical, somehow my partner & I both forgot to shoot free throws for the original intentional foul--something that didn't come to me until after I was home.
Post-game though, my partner said that although he wasn't watching the play, he saw what looked like the bearhug leading to my original call. He also added, "I know why you T'd him, but I wasn't going to tell him."
Normally, I tell partners we should get together on Ts. Leave it up to me not to take my own advice this particular game. I may not be able to blame this on (possibly) being a rookie as the OP did, but I will learn from this and make sure it doesn't happen again the next time a play like this occurs.