That is the very well engineered Brigham maple filter. And, yes, they can be a PITA, but they're really one of the best filters in the pipe world.
After your pipe cools off remove the filter and rinse it off with tap water, Hawk. Allow it to dry and tuck it back in. The filter should be good for 35 to 40 smokes but YMMV.
My Brigham is the only pipe in my collection I smoke with a filter. It smokes well without the filter but does much when I use one.