Greg - Hope you're feeling better soon! Back pain sucks!
I get back cramps/spasms along with migraines once a month for 3 - 7 days at a time. Why can't I just get regular tummy cramps like most woman?!

Have you tried soaking in a hot Linament bath? Add about 1/16 cup Linament liquid while filling your bath water, then enjoy soaking. It amazing how well it works! It's basically a stronger version of IcyHot in a liquid form that's sold in most feed & tack stores & is typically used on Equine.

Depending on your skin sensitivity, it can be used full strength directly applied to the skin. **(Never apply directly to skin right after a showering or swimming as your pores will be open! )** I found out the hard way after taking a hot shower as it can/will cause redness, blisters &/or burn severely! I couldn't get back in a COOL shower to get it washed off quick enough - it burned/stung that bad! Although my back felt sooo much better, it took almost 45 minutes for the redness & cool sting to go away.
*Not recommend for human use*