This is despite nearly getting stranded in London on Saturday evening when there was a power failure and nearly everything leaving Euston was cancelled or delayed. Made it to Brum with minutes to spare to get the last cross-city train of the day, arriving home exhausted. (But I think it's worth it!)
Did you eventually get a train from Euston, or did you end up heading toward Birmingham from King's Cross or St Pancras?
One of the many times that I has bound for Manchester from Euston, all north-bound trains out of the station were cancelled due to a signal failure somewhere up the line. Operators from King's Cross were accepting tickets written for trains from Euston, but I was hauling my usual 4-week's worth of luggage, so wasn't about to attempt the stairs from the Tube station down to the trains, and I really didn't want to walk. Despite the badly-informed rail representative who was attempting to direct passengers and who seemed baffled by the concept of busses, I took a bus from in front of the station to King's Cross and boarded the first train headed in the direction of Manchester, knowing that there were unlikely to be any seats. Ended up in a first-class carriage, sitting on the collection of luggage in the handicapped area. It was actually quite comfortable.
BTW, the luggage wasn't filled with clothing; it was mostly photography equipment. I travel with 3 changes of very casual clothes, plus one presentable-looking outfit, and wash the day's laundry in the sink every evening, hanging it in the closet to finish drying in the morning, and to get it out of the way of the cleaning staff.