Cannot delete relationship attribute with status "stuck"

The issue is that I cannot delete a relationship attribute in a collection. Its status appears as "stuck". It got into this state after I attempted to delete it.

Deleting the attribute returns a success message in the UI, yet the record remains in the same state. I checked the HTTP response and the error I see is "Attribute not found".

I'd rather not delete the collection, I can't afford to do this. it's too complicated to have to recreate the whole thing again. Thank you for any help.