I bet you could take the frame apart and remove the broken window frame. Then you could have new glass cut and inserted in the frame.
On the other hand, if you have a little spare cash this would be a good opportunity to replace the single pane window with one that is more energy-efficient.
It is not difficult to replace the window. Just requires at least two people and the removal of a tremendous amount of screws. If you go this route then you will have an opportunity to reseal the frame in to the rig as the OEM seals do not last long... ask me how I know. I can tell a long drawn out tale of the minimalistic and sparing use of sealants from the factory.