Yes, as with any clump planting the individual plants would be expected to lean away from one another (grow away from the center). This will happen no matter how few pieces you have in the pot. In fact the individual branches on a single specimen will do the same thing.

If you think it would be better to break this planting up probably best to wait until spring to do it at this point.

Usually a personal preference: too many plants in same container will always compete - interfere somehow. If you like the look - keep it. My preference is a singe plant, that gets thicker trunk as it ages, rather than many skinnier stems.

There are some plants that look better to me 'crowded' - consider this all JMO :)

"... do you think it's too crowded?" Not at this point. If/when you do decide to divide the individual propagules, you can correct any curves or leaning tendencies by adjusting the angle at which the stem exits the soil, and pruning the top slightly to an appropriate branch. I can help you with that at the time if you find yourself in a quandary. It's a personal preference, but I think that plants with trunk movement (bends) and plants that exit the soil at an angle provide much more visual interest than plants with an owner whose vision doesn't extend much beyond a vertical trunk with a sphere of foliage directly above the point where the trunk exits the soil - like a lollipop.

Best time to divide and/or repot would be right around the summer solstice or just before (around Father's Day).

Al