You've got a good memory; that was over 20 years ago. Egan was just hours into a trip on his Road King when his lower back seized up (he had just installed new handlebars for an upright seating position). He returned home, rested a night, and set out on his RS which afforded his back "a wonderful underslung concave slouch". He completed the 6,000 mile trip.
He even headed the column "Orthopedic Bike".