"For those with Celiac or high sensitivity to gluten, they will package the Chex at home into a very small ziplock bag (like a jewelers bag) with as much care as needed. A member of that family brings the individual bag to church, hands it to the priests, and and tells them where they are sitting so the bagged Chex get into the right tray. When it is passed, someone in the family opens the bag carefully and dumps the Chex into the hand of the person with Celiac. That way, the individual/family has confidence that they won't have to deal with cross-contamination."
I agree that that is the best way to handle it for those who suffer from celiac. It avoids cross contamination. However, if someone comes on their own and has no one reliable sitting next to them to touch/open the cross-contaminated bag for them to drop/pour the cereal piece into their hand, then I guess that person is out of luck. Seems like Mr. Andrus understands the problem with cross-contamination, though, for true celiacs and understands the distinction between those with low sensitivity and those who really need to avoid eating or touching any wheat at all costs. Celiac disease is mostly a women's disease, and I think this is why the problems of administering the sacrament to true celiacs have not been solved, and never will be, in this church. People don't care.
I have not experienced any leaders in the wards I have attended who seem to grasp or understand the issue, or even want to, even after I explain it to them in person, by phone, and by email. I have become very ill several times, and the illness from ingesting a piece of regular bread lasts for months since it damages the lining of my intestine, by trusting their open-air "gluten-free" trays which were not really gluten free after all, I found out by asking a person who was supposed to be "trained," and by trying their other methods of handling it. All of this has been at my body's expense and not at the expense of the errant men who were in charge.
It is an issue of health and safety and therefore of the utmost importance. If some people with low-level celiac or who are just experimenting with a gluten-less diet don't want to be careful, that is their prerogative, but that view and attitude of cross-contamination not mattering very much is not something that should be thrust on us who do need to be careful to avoid all cross-contamination. The majority--those who are not very diligently careful celiacs or those who are simply experimenting with a different diet--should not affect negatively the rights and needs of those with high-level off-the-charts celiac who need to avoid wheat and wheat residues at all costs. The results for celiac women who have it severely and who do not avoid gluten are not only a few days of illness, but higher risks of certain types of cancers, and damaged small intestines such that for months after an incident of cross-contamination one cannot digest any of their food and has leaky gut, making gradually all food you eat go directly into the bloodstream and become an allergen. I have been gradually becoming allergic to most foods, and so choose to follow the appropriate protocols to avoid all cross-contaminated cookware and surfaces.
The only good solution for single women in your church with celiac that I can see is to bring your own item to replace the bread and keep it with you so that no cross-contamination occurs. Putting anything of mine on a ward sacrament tray creates a high risk of cross-contamination if that thing has to then come back to me. I have tried that and tried all methods. These trays are obviously full of gluten. They typically don't wash them between meetings, and even if they did, all of the other celiacs I know never use cookware or dinner ware that has ever had gluten on it. The very act of putting my gluten-free bag or container on a tray that is full of gluten is obviously problematic. And since no one seemed to be trained or know much about celiac disease, there is no reason I should ever be asked to risk my health again because of their lack of knowledge. People arrogantly telling me that I need to eat from a tray that has gluten in it (in its crevices) and on it is not something I am willing to put up with again.