NICE! they are good to have and i like to meditate on mine

on your foam roller... try lying on your side to let it dig deep into your psoas muscle and even near the rib cage
i did this and i was very shocked of the tension i discovered between my hip and rib cage on my left side in the front.
it is still sore and tense.. my right side isnt as bad. I also found lots of tension in the pectoral region just by self-massage and let me tell you... it hurt!
i honestly hate using the foam roller....
a. its boring
b. it sucks cause it hurts
but ive renewed my committment to healing and now im finding myself doing it every single night for the past week.
if you have a tens unit, let it run on your hip area and maybe even the glutes as they could be pulling on the muscles.
if you dont have one, get into PT from your doc and whine and cry until they write a prescription for one. some wont do it for the insurance politics, but mine did right when i asked for it. having a tens unit is very valuable if you cant afford massage all the time and you can move it around.
remember that the problem may not be where the pain is, which is why you need to treat yourself as a whole instrument.
example is plantar fasciitis.
tension and myofascial scar tissue may exist in the calves or even the shins.
check the thighs or even the hips to and do stretches that improve your gait.
see what i mean? you have to look beyond the area that hurts. and if you have low back issues it could be in your hips, buttocks, a narrow gait, your shoes or tight psoas and maybe something with your abs. i know from experience because ive been studying my pain for the past 2-3 years. had i not be doing some of the things my old doctor or PT never told me about, i would still be in more pain than i am now.
now that im treating my hip flexor, psoas, obliques and glutes i think im getting closer
http://en.wikipedia.org/wiki/Psoas_major_muscle
http://en.wikipedia.org/wiki/Abdominal_external_oblique_muscle
http://en.wikipedia.org/wiki/Gluteus_maximus_muscle
remember, be patient and give your body time to heal and treat your body as one whole instrument