That's a bit of a risky endeavor my friend. I hope you haven't put a lot of bud in that jar. This is not how Boveda works and 70% humidity is now in the realm of mold growth, most of which you won't be able to see very well. Please be careful with this experiment.
Boveda is a humidity regulator not a desiccant so it may not re-absorb that way at all. Keep us posted
I am still burping the jar as I normally would and the RH is now down to 65%. The dry packets don't seem to absorb much and have been inaffective in reducing the RH at all. They have gotten slightly softer although still quite hard. I guess they must need a higher differential to re-hydrate fully.