This is ingenious.
She will never release those tax returns before the convention. Since she will no longer be in the lead sfter next Tuesday, she’ll no longer feel compelled to release them. Hillary will go to the Dems Convention with the intention of stealing the nomination, long past the time when releasing tax documents could have affected the nomination.
She is not in the lead at the present .. :>) .. After Tues she may be officialy toast and no need for any release ..!