yarnnelg, I had a similar situation happen to me.
qb drops back to pass, is pressured, steps up and tosses the ball underhanded to a back,( the Utah pass), play gains 5 yds. Coach of the defense loses his mind screaming for an illegal forward pass. Not because the qb was over the line of scrimmage, but because he threw it underhand. He took a timeout to "discuss" the call. I let him rant, told him it was a legal pass, and went on my way. He however, was not finished. "You're f!@#$ing killing me!"
15 yd unsportsmanlike
Later in the same game, back on defense, A has 11 in the huddle. for some reason, the 11th man thinks he is should not be in on this play, and leaves the field as they break the huddle. Offense lines up with 10 men (7 on the line) and runs the play. Coach screams "too many men, they broke the huddle with 12".
He again calls time out to "discuss" the situation. I tell him that the player that left the field, was not the 12th player, but the 11th, that they ran the play with 10. He didn't believe me, and continued to protest. There was nothing left to say, so I turn to begin play again.
He continues "C'mon, give me a call, I'm begging you". ( Several snappy retorts raced through my mind at that point, but I thought it best to leave it alone). Then he came out with " This is absolute Bull****!"
2nd USC, coach is ejected. Had to get the game manager and the police officer to escort him off the field.
This was a game between 2 10 year old teams, and he was leading 32-0 at the time.