Q.Do Erythrina X Sykesii Have Flexible, Cable-like Roots Far From The Tree Near The Surface?
I am doing a restoration project around a 30- trunk invasion of thisnspecies (from one or two planted in 1999 in a large park). I am finding snake-like roots just below the soil surface, or loose, above it, where there has been erosion. I havenot seen such roots on trees before. If they are Flame tree it might help control tye invasion to uct them. While I immediately suspected them to be Flame tree, fromvtheir location and being unlike anthingnI have encountered before,without confirmatikkn that Flame tree have such roots I cannot be sure they do not belong to another, probably native tree, in the surrounding forest.

Certified GKH Gardening Expert
It could be! Unfortunately, your photos did not come through. I am unable to see the roots in question.
You could still cut the area around the clump of trees, but you will need other control as well. They will come back from segments left behind. It may require chemical control to eradicate, completely.
This article will offer more information about the tree:
https://www.gardeningknowhow.com/ornamental/trees/coral-tree/coral-tree-information.htm
This article will help you to kill a tree: