If you posses your opponents tag, and it has deployable gear. If you deploy the deployable equipment , do they stay your mines if the tag is cleared of the Possessed state?
Once deployed, equipment is completely independent, so possessing/killing/isolating the unit that deployed it will have no effect.
Are there TAGs with Deployable Weapons/Equipments apart the Mine Dispenser (Maghariba and Raicho)? Am I missing something? Anyway, yes. A model of your Army deployed the equipment/weapon, so it's yours.