Unrepairable! Ha. Did the same shop try to sell him a replacement immediately?
I repair delams like that at least once a week, usually much worse. Out of the last 7 boards I have repaired, only one has come back needing some additional work.
Get yourself some epoxy, a couple pieces or rigid plywood, or some heavy gauge steel plates and clamp the site real tight. Let cure for full amount of reccomended set up time. The clean up the ooze around the edge. Send your boy on his way to enjoying his fixed ride.