I have a similar situation with a fireplace which is built out from my front wall and is thus between my speakers. It does effect stage depth in the center and makes for some interesting reflections and multiple corners behind the speakers. It obviously can't be moved, but your armoire can be. I would get it out of the room if you can. Depending on the resolution of your system, it could be a significant improvement.
Armoire between speakers
I have a large armoire sitting between my 2 speakers. This requires I place my speakers about 9 feet apart, about 1' from the sides and rear walls. The sound is still good and so is the soundstage. How much improvement in sound and staging can I expect if move th armoire out of the room? Will it be dramitic or subtle? Thanks for your opinions.