A. When large palm trees are delivered to a property for planting, frequently the fronds are gathered together and tied up in a bunch at the top. If they are wrapped correctly the fronds will bust open these ties as it pushes new growth.
If it is wrapped incorrectly they may have to be cut but this is seldom. It has been cool. Give it more time and wait to see if it does it on its own.
Otherwise cutting the ties can be done any time after planting. The purpose of tying them is to make the tree easier to load and transport on a truck, unload and plant. This decreases damage to the fronds during transport and planting.