These are some things I found:
Michigan State University Extension
Preserving Food Safely - 01600593
08/03/99
REPROCESSING UNSEALED JARS
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If a jar fails to seal, remove the lid and check the
jar-sealing surface for tiny nicks. If necessary, change
the jar, add a new, properly prepared lid, and reprocess
within 24 hours using the same processing time. Headspace
in unsealed jars may be adjusted to 1 1/2 inch and jars
could be frozen instead of reprocessed. Foods in single
unsealed jars could be stored in the refrigerator and
consumed within several days.
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I checked many other sources also and they all said this exact same quote. I guess you can't really freeze pickles :-(