Alright. And it seems you confused the rigs with the modules - only rigs should get destroyed and the modules should end up in your hangar like ship equipment. You should also be able to unfit the modules individually which will change your layout of the slots of the ship.
It is possible that you did just that…changed a module that changed your layout and suddenly you had one turret slot less. So either change the modules back until you achieve the correct count of turret slots to be able to remove it or repackage the ship which should also work.
And no this is no ‘matter of taste’…even this has limits 
Eye cancer producing textures like this are an assault on everyone that have to be avoided.