Fake bake spray tan - legs gone wrong, prom tomorrow, what to do?

Today I got a fake bake tan done professionally, the colours fine and its even but the woman in the shop used exfoliator which has made it go wrong I think - there are dots all over my legs but only on certain bits, and in lines, and the skins darker. It looks horrible, it hasn't been 8 hours yet so I can't wash it off yet but will the dots go when I do wash it off?