Oklahoma Highway Patrol try to arrest EMT

I have gone through all the available links and still I can't figure out why the highway patrol would stop an ambulance in the first place. And why did he not let them go as soon as he heard there was an patient inside.

Here are two links both are eye witness reports of how the patrol guy was way out of hand. News channel & Witness letter,

This whole thing just shows how much the world is changing where you do not know who can be trusted anymore! Ambulances and the police are meant to be on the same team, not fighting. I know not all cops are like this but the few that are is making enough of an impact to give them a serious bad name. This patrol man could not possibly have a good reason for his behavior and should be dismissed.