I have two potted plumeria that seemed to rocking a bit in their pots. I dug the soil away from the trunk base on each and it looks like any trunk beneath the soil has rotted, though still firm at the core. It is like the plumeria are fused to an under the soil broomstick! They are both putting out new roots from the soil line from the green part of the trunk. What do I do? Leave them be, or dig them up and cut off the rotten broomstick part?

I think they really want to live.