o either submit to discovery on that subject or be precluded from relying on the privileged evidence at trial. See, e.g., Intl Tel. & Tel. Corp. v. United TeL Co. of Fla., 60 F.R.D. 177, 186 (M.D. Fla. 1973) ("Fundamental fairness and justice requires that if the defendant intends to waive the privilege at tr