If it were me, I'd gently rearrange them - top on bottom, etc. I'd be real careful to not re-humidify too fast - it could cause a wrapper to split, even going from 50 to 65 or 70, if it's too fast.

I don't think a week at 50% was too long - water leaves relatively fast, but it takes longer for "oils" to leave. They should still be ok, as long as you begin returning them to better conditions fairly soon (and you already have) and over a period of time. A 2-3 week re-acclimation sounds ok.