Plastic drain petcock on radiator help!

Well....like a dumbass, I messed up the plastic drain petcock on the radiator of my 04 Dodge 2500 diesel truck. It just spins and clicks. Anybody know how to remove the old one without messing up the radiator? The new water pump and serpentine belt took 30 minutes to replace, and this dang drain is kickin my butt. You can buy a new petcock at NAPA, but I can't find anything on YouTube about it other than one Russian dude. He got his out...but didn't say how! Any help is appreciated.