If the mikes were placed in front of the performance then the sound should be in the same perspective as the audience heard it. Do you have any recordings of concerts you witnessed yourself that you are basing this on? Not all orchestras place their members in the same places. It sounds very much as if you have the signal channels reversed in the chain somewhere. If you have a test recording play the channel identification section.
Has anyone considered reverse stereo playback?
My experience with recordings in the home stereo cd playback is that they are many times a reverse soundstage from the actual concert experience. It really bothers me that the piano, guitar etc. are on the opposite side of my room from what it was in the actual concert. I am at the point of reversing my speaker wires to better capture the "concert experience". Does this bother anyone else? What have you done about it? Is this something I should accept?