If it were my tree, I wouldn't. I think it has interesting, unique lines. It looks very naturalistic to me - not just the same old cookie-cutter twin trunk. You just need age and refinement.
You might want to lean the first trunk out a little bit to increase the spacing between it and the second trunk. That way as you tighten up your foliage you will be able to create a cleaner break between the three trunks.