>I'd love to test it - we have lots of apps running 24/7, and enough index corruption.

Systems that run 24 / 7 are exactly what I am looking for.

>I didn't think it is possible to recreate the tags without exclusive use.

This is normally true - however I have found a way to do it!

Are your tables Free or referenced by a DBC?
Do any tables have Primary and / or Candidate Tags?