If you can get a few more of the only-slightly-soft ones, grab 'em and feed those ones first, keeping the good ones a bit longer. Pumpkins don't like cold storage, but you can freeze them if they start to go soft before your use them up.
I had hundreds of pumpkins this year and that made me "relax my standards" a bit and feed spotty ones. I had to go through my pile every day and look for spots and get them out first. The animals all seemed to like the soft spots the best. Not moldy or black, just mushy.
The pigs preferred the ones that were actually smelly, and would ignore the good ones I gave them until they'd flattened out into a stinky pile.
Another thing you can do if you really have no pride (like me!

) is go back with a knife or a machete (it is fun to whack pumpkins!) and a pail and grab the seeds out of the slightly softening ones. That is the part they like best. You can freeze them in portions if you get a lot, or dry them, but for me drying them would be too much work for the chickens.
Great score! Now you know to ask earlier next year....Nov 1 is the date for asking around here. No one sells pumpkins after Halloween, since hardly anyone cooks them anymore, just decorates with them.