Daz H is that Luv Shack's shack?![]()
Yup sounds like piriformis syndrome, As i have it at the moment,the pain can be quite severe at times brings the training to a dead stop(getting out of bed can be a pain)
Try these stretches ,they work well for me , But all takes time , still a pain in the butt though
http://uk.youtube.com/watch?v=tFtUgS69rPk