weewee...
what type of connection is it?
Meaning, metal to metal....if so, the ice should help. If not metal, go the opposite way...apply heat. NOT TOO MUCH of course
...and try using some kitchen JAR helpers. You know, those circular rubber thingys that you use to open the peanut butter jar before calling the dog.
...W-D should work good though, especially if you stand the rod up correctly...like alr suggested. Give it time......it t'ain't spring yet me boy.......or are you still heading South - - . . . .. ........