That knot got you but all is not lost. Glue up the crack, add a handle piece on top of it and make your fades at least 2 1/2" long so the area is non-bending. Sandwiched between the bamboo and handle it should hold up.
Long fades on a BBO, I find the ends are much less likely to lift if you put down a couple of 1/8" shims first before you add the thicker handle piece on top of these.