So I remembered something that I did once that might help out. This is kinda experimental but I have done something similar.
I alsways save some stem from the grow in the fridge after the cut in case I over dry. I stick the stem in the jar if the RH falls below 55 and it raises the RH quickly. I did a side by side comparison with the overdry vs standard curing stuff, and just being the guinie pig myself, felt the overdry stuff only suffered a slight flavor loss after the whole process. The product was still damn good.
Here is an idea... dry the hell out of it, save the wet stems in a bag in the fridge. At the time of departure, jar it up... and when you get back open it up to allow the air to exchange. If the RH is low, stick the wet stem in the jar for 2-3 hours at a time while slowly raising RH again.
Like I said, I never tried it like that over 5 days in the jar before...but have done it successfully over 2-3 days in the jar.