Have ya tried re-attaching the speed nut 'spike' (I presume thats what broke?) with that 'metal' putty stuff you can buy?
It comes in a roll of putty, one coloured 'inner' core and a different coloured outter.
Anyway, ya cut it to lenght mix together (something like epoxy) and stick that 'spike ' back on.
Hardens as hard as steel!!!
I always carry a tube of it incase something breaks while I'm out, just 'putty' whatever back together for a quick fix.