It certainly looks like the tissue of the Adrenals sucks up Hg, and no doubt that Hg detox can throw those in the same type of Hypo/Hyper cycle as Iodine can while the Thyroid is healing. But once again that detox can be managed by the amount of DMSA one takes during frequent dose chelation.
There are of course other reasons for Adrenal problems, and some undoubtedly come from those friendly planes in the sky and the non existent chem-trails...