Ohmwrecker's active should disable Reinforced Armor.
Reinforced armor is the buff that turrets get when no enemy lane minions are nearby granting them 2/3 damage reduction, including the true damage from an elixir of sorcery.
If the active that disables turret fire also disabled Reinforced Armor for the duration, it could actually be a viable item for splitpushing along with its marginal effectiveness for diving.
As a side note, no they will not delete the item. It was created as a reward to a player for getting 1000 referrals. Wriggle and Grez were butts.
"You have been promoted from living Ward to living Turret. Congratulations."
"Yes, sir!"