If the roundup was not absorbed into the plant it would not stimulate growth. So its pretty clear that discarding the husk does not remove the glyphosate.
Huh? Glyphosate is used to KILL plants, not to stimulate growth.
So then the questions are 1) how much glyphosate winds up as residue in the seeds which are harvested, and 2) is whatever amount you can detect in the seeds harmful? I have no reason to doubt the claims that SOME trace of the glyphosate can be found in harvested crops, but I also have zero reason to believe that whatever glyphosate is there is in any way harmful. Or at least, anywhere close to being as harmful as the preservatives, and artificial colors, and artificial sweeteners, and "flavor enhancers", and the plastic that leaches into your food and drinks if you buy canned food or plastic bottles of water or cans of soda, and all the other thousand chemicals that the food industry puts into the crap people buy at their grocery stores. The added sugar alone that the food manufacturers put in the food nowadays is going to do multiple times more harm to people's health than any traces of glyphosate that may be in the food.