A little about D

Today, D had an.....incident when getting on the bus. He and his little friend who gets on at the same stop frequently scuffle to be first on the bus. When the bus came, both boys were ready to shoot to the door of the bus. I held D back. I wanted to give him a hug (he usually does this himself) and give his friend the chance to get on the bus first today. This made D mad. He jerked away from me and climbed on the bus. He turned around on the steps of the bus to angrily tell me to not hold him back again. I told him enough and I love you. He was bordering on a tantrum.
The bus driver decided to step in. She did not approve of the way D was acting towards me and she told him so. I appreciate her effort but at that moment it was not the best thing. I felt terrible for D. As the door was closing, he slumped down in his seat. He was trying so hard not to cry. I know she meant well but that just embarassed him. This means it will be harder for him to calm down from losing his temper.
D's temper is a force we have been dealing with all his life. He is a great kid -obedient, loving and kind. But he does have a temper. Generally, he calms down quickly enough but sometimes that boy can escalate to unreasonable in .2 seconds. At that point, about the only thing to do is wait it out. Talking about appropriate behavior pretty much has to wait because there is nothing penetrating that tantrum.
Fortunately, D's temper doesn't come out too often and escalates even less often. I haven't heard from the school, so I'm guess he calmed down on the bus. Still, as the bus pulled away, I felt for him. His face was so sad.