He ignores the installation guide, which states "NOTE: Devices updated to watchOS beta may not be restored to earlier versions of watchOS."
He recognizes that there is no Apple supported way to downgrade but still goofs around and bricks his watch.
He applies such top troubleshooting solutions as "restarting the phone, the Watch app and turning on and off Bluetooth."
Apple is generous enough to replace his device, despite the fact that the situation is entirely his fault.
But... how to top off this series of events? He posts a video of the end result of his idiocy to YouTube with the caption "Nice Job Apple." Unbelievable.