You could try a phantom center if you are going to have a single listening position, but if you plan on multiple seating areas, you lose the effect. Another option is to get a center channel speaker stand and place the center out in the room even with the L & R speakers at the edges of those closets. Not ideal, but it's not an idea area.
If you aren't limited to putting the TV there, either of the other two long walls would make for a better front stage.
Samsung PN60F5300 | Denon AVR-1713 | EMP E55Ti | EMP E56Ci | EMP E5Bi | Outlaw Ultra-X12