Any experienced LMTs out there?

I'm a mage therapist and my husband has been experiencing recent and severe low back pain. He has pain across his entire low back which can be alleviated with OTCs but he has another localized pain on the left side right along the sacrum. I've been working on him and don't seem to making much progress (using heat, Icy Hot, stretching, deep tissue and vibration). So, I'm putting some feelers out to see if anyone has worked on similar and what you found was effective- if anything.