Ice it a lot, make sure you get something between the ice and skin, i went from shinbang to like frostburn/bite on my shins pretty fast, then again I fell asleep with the my icepad thing.
Anyway, ice all you can, and i did a couple ice baths (filled like a shin high bucket /w water and lots of ice, about 20mins in it), helped a lot for sure since it was both shins and calfs, pretty much my whole lower leg was done for.
Been out for ~10days, mostly due to weather and just not feeling like going and i went from by far the worst shinbang of the year (ive been at the point where i could barely gas the pedal, this was worse), to prolly the best i've felt.
Also riding rampages, and i have booster straps, which i tighten on the upper 1inch of the tounge to get a snug fit, did jackshit. Also tried the padding thing on the upper portion of the tounge back when the shin bang was on the lower half of the shin, before it spread to pretty much everywhere