Turns out that a combination of a vice grip and brute force is required to disconnect the hose.Originally Posted by PC7060
The white plastic section needs to be pressed up (hard!) toward the female brass receiver while pulling strongly on the brass male section of the hose. Given the size of the white locking piece, I couldn't get enough pressure with my hand alone and ended up using a pair of vice grips adjusted to slip around the outside of the host coupling while being small enough to press around the majority of the white 3/4" round plastic ring (see pic of hose and vice-grip below, faucet not shown).
Once you get the pliers adjusted, push on the vice grips and pull like hell on the hose. Then, if you are lucky, the hose pops out and dumps a cup of water in your face.
The old hose couple had corroded just enough to bond to the mating section which is where the brute force component of the job comes in.