You can get them pretty warm, but when the rubber softens it comes out of there like a gunshot.
There is a clip holding the flex hose end in the bracket.
Remove it then pull steel line down into bracket to get wrenches on it.
Once hose is off,stick a pick in the end of the steel line. Heat nut and cool with water a couple times. The nut should come free from the line and swivel as it should.
Have done this hubdreds of times and it seems to me there us no better way to save the line.
