In reply to omerta:
Yup, looking forward to your reply on this. I was earlier in the year, put out from most activities because of a complete left-side of the body disfunction (only way I can put it) I think it was a exacerbated by a car accident. Everything from plantar fischitis and iliotibial pain through to the hip/back pain you describe and shoulder pain.
It all started getting better when a friend of mine said 'You wanna start stretching those hamstrings out dude'. A tiny bit of relief later and I got on the foam roller for the ITBS and I'm loads better. I started rolling out my lats and armpit too which has started sorting my shoulder problem. I think there is also a badly knotted muscle somewhere high in the shoulder that I've been massaging out and its really helping.
I've had to work on each individual component and things are much much better. I've got to the stage where I might see a sports masseuse for some sessions.
good luck.