DonM just pulled it away from the grip as needed
That's what I do....a bit of a pain, but it works. I've had a few that the bottom half of the grip let's loose and it takes some TLC and working the grip on the stubborn part to get it to let loose.
Re the PVC.....I've also sectioned off a piece of those cheapo individual bag dividers that used to be sold to put down in golf bag to help keep clubs separated. Flimsy but effective.