Mango sapling broken off

Mango-grower starts with ...
I have a Daleys Glenn mango, bought and planted in the front yard about three months ago. It was growing very vigorously, and had about quadrupled in height with flower spikes developing. Unfortunately, it was near a public path at the edge of the yard and some vandal has broken it off leaving only a stick. The break is above the graft. Should I a) make a clean cut and hope it recovers, as it seems to have a good root system, b) try to graft a section with leaves back on (so it would have two grafts), c) give up and pull it out.

Thanks.