Key Pair and Security Groups created by jclouds are not removed when the node is destroyed (via Jclouds)

Simply stated, the problem is that the nodes that are created in EC2 via jclouds leave a key-pair and a security group each, after they're deleted (also via jclouds).
This issue is described in much more detail here: http://www.cloudsoftcorp.com/blog/tidying-up-after-jclouds/
Hopefully it's an easy fix and the operation of first creating and then destroying the node will leave no unnecessary artifacts on the EC2 account.