Hi Willo
Just had a look in the garage - 4 of them were affected - its basically the plastic legs of the crab that went wonky.
One day when the fishing is slow and you bored - throw the crab 10m onto the sand / bank - then walk it / reel it back to you into / towards the water (assuming you fishing off a boat)- haha unbelievable how realistic it looks on land
Best crab lure I have is the Baby CW Crab great on grunter as well as a yellowfish killer in the rapids .