Jeannine, so sorry to hear about this! Don't let them put you on a downer.
I managed to get the top half of a pumpkin to re-root last year, it was just out of interest (I'd planted them too close & this was the thinning but the roots stayed behind). Might be worth taking the top half of each plant & putting in some mpc or something finer, with lots of water...
Good luck.
Olliew x