I can see myself being on both sides of this. I can also tell you that I would have handled things different according to what stage of my career you may have caught me in.
If I were the medic from the hospital service, early on in my career, I probably would have done the exact same thing he did, and look like an ass in the process. During this part of my career, I would have opened the back doors and checked to see if the medic needed any help. If he did, I would have ridden with him to the LZ, if not I would have gotten out and closed the doors.
If I were the medic from the county/ fire service, I pretty much would have handled it the same way no matter what stage of my career you caught me in. I would have told the ignorant deputy to move her ass from in front of my ambulance or her husband was going to have a patient to take care of.
I wish they would have told how long both of the medics involved have been licensed. That would probably explain their actions somewhat.