Did he have socks on when he deplaned?
I wondered if he'd soiled hus socks and/or shoes. The ones he has on in those pics above don't look like they fit. You'd think people caring for someone with fecal and/or urinary incontinence would know to carry spares...
Unless they ran out of spares...
If things have gotten that bad, this may be the POTATUS's last road trip...