It's very common. Tantrums usually escalate until they realize they don't get what they want EVER, then the extinguish.
If it were my dog, I would just stand stick still. Let him toss him self around, bark, jump, be a jerk. But I would not move a muscle. Sometimes the battle is won by the one who keeps his calm.
If people give you a weird look, I would appease with a " temper tantrum, trying to keep my cool". Most people get that. As long as you are not getting frustrated and taking it out on the dog. Just standing still, take a breath. I have actually been known to check my email. Keeps me calm.
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