While doing some late evening spotting at MSP I saw a 744 land on 12R. It was dark out so I thought maybe it was a Delta plane. I was even more suprised while it came back on taxi way Mike I could make out the old United colors. Flightaware shows it as UAL 896 HHH to ORD. It looks like it left HHH 10 hrs late, then gets diverted here. Not a good day for this flight. It was still nice to see "The Queen", its been awhile. I'm guessing medical, since it's getting ready to leave.