I agree with what's already been said; repot the plant with the oldest growths next to the rim of the pot.
It's perfectly natural for sympodial orchids to do this. Orchids with longer rhizomes race faster across the container than do those with short rhizomes. For this reason, orchids with long or creeping rhizomes tend to be grown mounted, since the mount can better accomodate the new growths.
I should also mention that there are sympodials that have different habits. I've seen some that have ascending rhizomes, where the new growths grow in a stacked manner. Likewise, there are sympodials that grow in many different directions and break new leads practically everywhere. I put sympodials with these growth patterns in the center of the new pot so that the new leads can grow wherever they wish.