At that point usually we just reprint. Repairing works but its not ideal and usually you can see the repair. If its within our warranty time we just save time by reprinting it.
Remake, it isn't worth your time to fix it, and the repair process would leave the repair severely undercured, or the rest of the material significantly overcured. I don't think there's a way to repair them that conforms to the verified workflows we follow, either.
I"d be curious what Keystone has to say about repairing the material. Cost is minimal for this process, so I can't see a good reason, except curiosity, to repair it.