Need to restore a Users Mailbox that been deleted and is now "Marked for deletion"

Can some one please advise.

I have accidently deleted a users mailbox store in the EV Console this afternoon and now its "Marked for deletion".

(Note I have not deleted their AD/Exchange account)

I need to get it back before the user's archived mails are deleted.

In the EnterpriseVaultDirectory there is a Table called DBO.Archive whihc lists all the users mailboxes, except this one That I have not as marked for deletion.

I have found it in the DBO.archivehistory table.

Also whats the task or process that completes the deletion process, and how can I stop/postpone it.

Any help /advice would be appreciated.

Many Thanks.

Matthew.