[AcampoDave]

I'd say your right. It's likely stuck. I spray stuff like that down with WD40 since it conducts electricity and evaporates decently. It's good for stuff like that. The female side of the plug is in the engine bay and that is the side made to be pulled out. The male side goes thru the hole in the support and has a rubber skirt around it with a groove cut around the middle perimeter to hold it fast in the hole. If you unplug the engine side you should be able to kinda pry at the skirt on the male side and pull it thru toward the radiator.