The reason she was stuck was she had an unauthorised evacuation from the rear and was not a happy Bunny.
So I waited with the dog as she walked down the cycle track to catch us up.
I then did all the usual stuff removing the wheel and half the tyre to find a Thorn had gone through the Schwalbe Marathon and tube.
I thought it best to remove the thing from the tyre carcase and not leave any bits in there to get pushed into the replacement tube.
All went well as I managed to push it out but not quite enough to get hole with my fingers. I was not sure what she had ridden through
The new tube fitted inflated and we were soon on our way.
The moral of this tale is to take a pair of pliers to pull stuff out of tyres next time.