Hi David - jiggling entire objects a bit is a lot more feasible than trying to jiggle curve control points. Check out here for a randomize plug-in which you can set up which will let you do some random movement, scaling or rotation on objects, it should work to add so me non-uniformity to your cutting holes:

http://moi3d.com/forum/index.php?webtag=MOI&msg=5416.5

- Michael