ah yes. I've had many a spill like that with my carnage.
Theres a cover that goes over the front of the lower section of the housing for the diff.
take of the front bumper and you'll see it , it has a 2mm hex head bolt which needs undoing , that then shows you where the hinge pins are, pliers will get them out, just pull.
PS freeprawn racing are great for spares, uk based and good service from what ive found in my dealings with them