Yes, take a razor blade and cut through the mat and dip the open wound into iodine (all I am familiar with is Kent's Iodine so can't give any recommendations for any other brands) and let them sit for about 30 seconds out in the dry, reglue them to a mount or whatever and place them in the tank.
To remove them off the plug cut through it with some wire cutters/bone cutters but you can also wittle right beneath the polyps if the moutn is a soft substrate.
Looking good.