Here you can use the Trail relaxation speed graph to set a curve to define the behavior at which the transform returns to the animated pose. Using the graph editor in the property's settings, you can edit the beginning and ending point of the graph to control how the behavior of the chains return to the animated pose. Or right click the graph to add a new point on the graph to manipulate the curves position. The graph's X-axis is ranged from 0 to 1, and it is mapped to the chain of joints. 0 represents the last joint in the chain and 1 represents the closest joint to the Trail Bone. The graph's Y-axis controls the rate at which the delayed motion is passed to the next joint in the chain. Values less than or equal to 0 will prevent joints from continuing to pass the delayed motion. Higher values will pass the delayed motion on quickier. The Y-axis operates as an absolute value to prevent frame dependency. The default range is from 5 to 10 resulting in a faster return from the root joint to the bottom joint.