Then, I carefully snipped one stitch about halfway between the two sections. I used a crochet hook to remove a row, separating the two pieces of fabric. Once that way done I just unravelled each piece to the row on the needle.
And finally, I grafted the two sections back together (for a good article on grafting, or kitchener stitch, check out this knitty article)! It took a rather long time (several episodes of Venture Bros. on Netflix) but it was well worth it to maintain the hem. I also shortened the sleeves and added a curve to the neckline. Here's hoping it doesn't require any more surgery!