The developer's ghost to beat isn't the Dev26485 whatever on the leaderboards. It is a default purple ghost that you race the first time you do any Spirit Trial during the campaign. Simply beat this ghost on all 8 trials for this one.
Of note: the game disables all of your shards except Sticky when you start a race, but if you quickly open the menu before the countdown finishes and the race begins, you can re equip Triple Jump if you have it. This makes a few of the races much easier. Dash is crucial as well, knowing WHEN to dash. A video is not necessary for this one as you have the ghosts to race. However, I have included race activation points (finish lines) in the collectibles video.