A 55-year-old man with obesity has completed neoadjuvant chemoradiation therapy for CT3 N2 M0 distal rectal cancer. During his posttreatment evaluation, he is found to have a partial clinical response and is offered a low anterior resection. His total mesorectal excision is completed uneventfully; however, the mesentery to his terminal ileum is thickened and foreshortened causing difficulty in getting the bowel to reach the abdominal wall in the ideal location. The best option for fecal diversion in this patient is