A look inside the cracked fork lug from my Tour Easy shows that it really did fracture at the top of the fork blade:
Minus the flash, plus contrast enhancement:
Looks rather grotendous in there, doesn’t it? Yeah, show me the interior of your fork…
The front is at the top, blade on the left and crown on the right. The little shiny rectangle at 1 o’clock on the crown was probably the last fragment holding the blade in place.