If referring to separating the hose itself from the metal bracket, I sprayed a little WD40 about the edge of the hose, grabbed the bracket and pushed the hose through using my thumbs. Using a little WD40 on the hose helps slip it back in to place too. It can be a challenge to get a good grip of both the hose and bracket at the same time to slip it back into place...at least it was for me.
If just separating the bracket itself from the car, there is a form gasket that will likely stick, so just twist and pull. You will likely need to replace the gasket if it tears like mine did. The Dodge replacement gasket that I bought didn't fit correctly, so I had to modify it a bit to fit correctly.