2005 Chrysler 300 Wiper Arms ?
 

I recently had my car in for AC service to replace the evaporator coil. Now my windshield wipers are way off from where they were before. I believe they switched the right/left wiper arms when putting them back on. They are not interchangeable. The dealership is half hour away and do not want to have to drive all the way there. How do I remove them in order to switch them back? Any help is appreciated. Thanks.