Is your stand a 2x4 construction? DIY or store bought? if it's 2x4 you could reinforce it by putting beefing up the lateral beams with a couple extra 2x4's. You may be able to do this to a store bought as well, then you should be able to remove the centre beam. IT all depends on what's on the sides for support, and also if you'll be able to get any reinforcement in there.
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