So things have improved since yesterday's low point (literally) where the pain in my piriformis muscle meant I couldn't get up off the floor.
I've been doing my piriformis stretches regularly and using some deep freeze patches on my backside whilst at work and using the spray in the evening.
The muscle seems to have relaxed a lot today. Yesterday evening you could feel and see a lump the size of a golf ball (eek!) whereas now it hardly noticeable
I've been really fed up that I couldn't run this morning as usual, it's startling how running has become something that I'm now craving. As tempting as it would be to think that I'm suddenly cured and go running in the next couple of days, I know that I need to rest a little while longer.