>>5260946>>5260931Pardon the Potatocam 3000. But yeah basically the Mushroom peg that fits inside that gap pushed it's way up through the plastic and crumbled it, rather than snapping it's way out, so there's no real way to glue it back.
On the plus side, since it's just this bit that broke(rather than the peg itself), I could probalby fix it by switching out the waist(which is on a pin hinge for transformation) with a new one from a hasbro Motormaster... though I'd have to pop out pins, and Ive never done that before.