Posing IK pin question

bohemian3

Hi all,
Is there any way to "lock down" a pin when posing? Currently you can pin a node, but when you begin to go for extreme poses (Like hanging from a building) the node will eventually move with a dotted line to its origin. Is there anyway to prevent that? e.g. when I pin a hand on a ledge, I do not want it to move at all, ever so I can pull on the rest of the body IK elements to create tension. Hope what I'm asking makes sense.
As always, I appreciate all I learn from these forums. Thanks in advance for any insight you can provide.
(Notice the pin / dotted line in the UI on the left. On the right was the intended effect by pulling the body away from the pin but really couldn't get the tension needed without screwing up the hands)