How to disable sidebars?

Hello!

Is it possible to disable sidebars in those themes, which doesn`t support Content Layout function?

For example: Onion, DroidPress, BlackWine, EstateAgent, Photography and RealEstater?

Im sorry - DroidPress - its a mistake.

Hi!
No it is impossible. But these themes will be updated soon.

Hi! I back again with my question.
When these themes will be updated?

And how can I switch ride sidebar to the left sidebar in such themes? Is it possible?

Please? help! I need BlackWine theme with left sidebar... How can I do that??
It`s very important for me, and I going to buy this theme, if it will have Content Layout function!