I just set up a batch of tokens and I did not realize they'd all list out as individual links

There is an option to create single links valid for multiple invites, you just missed it. Don't worry, happens a lot.
I didn't add a delete option at that stage intentionally (to not send out links by mail that right after aren't valid any more), but they will expire by default after 7 days. If they annoy you a lot, I can delete them from the database directly.

Any chance that the verification form could be structured as a choose (x) options?

That's a good idea!