Say I am wearing a tinfoil hat on this one if you'd like, but this is not right. They are keeping these soldiers there way longer that their original tours. Their lifeline back home is the internet. Taking that away to keep more embarrassing photos getting out is just plain mean.
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.