I know I'm going to get a lot of disagreement from people with this answer before I even post, but here goes.
Your child needs a swat on the rump when he behaves like this. I'm not saying to beat the child, just stimulate his brain through his seat. At the very least it will interrupt his behavior, unless there is a medical reason for these temper tantrums.
This is a natural thing, to swat your child on the rump when they misbehave. Mother dogs bite or tug on their puppy's ears to control and train them. Without a mechanism to control offspring they would grow up unsocialized to their own species.