Multiple rooted cuttings in a pot is a basic "trick" used to produce a bushy plant quickly. It would be risky to try to separate them at this time. If you want to try, do it just as the plants starts growing.

..... no reason to think your plant or any part of it is doomed. It has built-in mechanisms that will ensure the separate stems will find their way to adequate light if there is adequate light to be found. A pyramid has 3 line segments that terminate at a common point. Think of your plant as a pyramid that's standing on its point. The longer the line segments/stems are, the greater the amount of space they can potentially occupy, ensuring that each leaf gets a full light load. Keep in mind that you can guide the direction your stems/trunks grow by pruning back to a leaf that grows off the stem on the side you want the stem to turn to.

Al